Source: https://mokxi.com/docs/account/billing
Updated: 2026-09-27

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Docs / Accounts and plans / Billing

# Billing

Stripe Checkout, the customer portal, and what happens to a project when a plan ends.

## Paying

Pick Pro or Teacher on /pricing and you are sent to Stripe
Checkout. We do not build a payment form of our own and we never see a card
number. The pricing page opens on Yearly.

Monthly and yearly are the same plan billed differently; yearly works out at ten
months for twelve on Pro, and at $129 against $14 a month on Teacher, a little
better than that. The pricing page's Yearly tab shows the best
of the savings.

The Teacher plan is one price for you with 40 student seats included, so
Checkout has no count on it. The calculator on /classroom
answers with Teacher for a class of up to forty and buys it from there too.

More than forty students, several teachers, a school, a district or a
university is Schools & universities, which is priced for you rather than
bought by card: press Talk to us on /classroom and a
person walks you through it, or type your number into the calculator there and
fill in the quote form under it, and a written quote comes back in minutes,
which your school pays by card or by invoice on net 30 terms.

Coming back from Stripe lands on your account page. The plan itself arrives on
the webhook a second or two later, and the page says so while it waits rather
than showing you the word Free with no explanation. A checkout you abandon comes
back to /pricing with a line saying nothing was charged.

## What actually moves you onto a plan

The signed webhook from Stripe, and nothing else. A browser coming back from
Checkout is a claim; the webhook is Stripe telling us what happened. That is why
a plan sometimes lands a second or two after the redirect.

An unknown plan value always reads as Free. A plan we do not recognize must
never be the generous one.

## Managing it afterwards

Your account page has a Manage billing button. It opens Stripe's own
customer portal, where the invoices, the card, the plan and the cancel button
button sends you to /support instead of failing quietly.

The Teacher plan has nothing to change there: it is forty students, and a
class that needs more asks for a quote on /classroom (cancel
Teacher from Billing first; it runs to the end of the period you paid for, and
the quote says so if you try the other way around).

On a school's plan (Classroom) the students you pay for are changed on the
account page itself:
type a number, press Save seats, and Stripe works out the part of the period
(adding students bills the rest of this one, taking them away comes back as a
credit on the next invoice). Two refusals are worth knowing about, and both say
so in words: more than two hundred students is an invoice rather than a card,
and a number below the students already in your classes (counted once each,
across all of them) is refused with the count, because seats are not taken from
students sitting in them.

## When a payment fails

You get seven days to sort it out, and nothing changes in that time.

From the first time a payment doesn't go through, your plan stays exactly as it
is for seven days: every project, every class, every student. A red bar at the
top of every page, in the editor too, says Your last payment didn't go
through. Update your card by the date, with an Update card button that
opens Stripe's portal on the card. The cross on the bar hides it until your next
visit. If you teach a class, your students never see the bar; it is yours.

We also email you three times, and no more: once when the payment fails, a
reminder on day five, and once if the seven days run out. Reply to any of them
if something is going on and a person will answer.

Stripe tries the card again by itself during the week. If one of those tries
works, or you update the card and it goes through, the bar goes, a short thank
you arrives, and that's it.

If the seven days run out without a payment, the account moves to the free plan
until you pay. Nothing is deleted:

- Every project stays. If you have more than the free plan's ten, the ten you
edited most recently keep working as normal, and the rest open and read as
always but won't save changes. Delete one to free a slot, or download any of
them.

- A class with more students than the free plan holds is paused, not closed.
The roster, the submissions and your grading all stay; nobody new can join and
students can't submit until you pay.

Pay at any point after that and everything comes back at once: the plan, every
project, every class.

The seven days are ours and they are the ones that count. If Stripe gives up on
the card sooner, you still keep your plan until the date on the bar.

## When you cancel

Canceling in the portal does not end the plan that day: it sets the
subscription to stop at the end of the period you have already paid for. Your
account page then says ends with that date instead of renews, and
everything keeps working until then. Change your mind in the portal and the date
comes off again.

## Invoices and purchase orders

Every card payment produces an invoice you can download from the portal. A
school that needs a purchase order before it can pay asks for a quote instead of
paying by card: open the quote form under the seat calculator on
/classroom (under forty students it is the line Paying by
purchase order?), or use Pay by invoice on your class page.

- Fill in the school, the person who pays the invoice, their email, the
billing address and, if your office has one, the PO number. You need to be
signed in as the teacher the seats are for.

- The quote comes back at once, on the screen with a PDF to download, and a
copy goes to the billing email. Forty students or fewer is the Teacher plan,
$129 a year; more than that is priced for your school's size. It holds its
price for 30 days.

- Your school accepts it on the quote's own page (the link is in the email).
The first invoice goes straight to the billing email and is due in 30 days.

- Until it is paid your class page says Waiting for your school's payment
with the invoice link. The seats switch on the moment it is paid.

Our legal name, address, tax id, W-9 and the ways to pay an invoice are on
/schools/vendor.

## Refunds

A first payment that was a mistake is refunded in full if you ask within
fourteen days of it. After that, and for renewals, a period already started is
not refunded, except where the law where you live says it must be. The full
wording is in the terms, section 3. To ask, write to us:
/support.

## What your plan is right now

The Your plan section of your account page
says it plainly: the plan's name, how many projects you have of how many, how
many saves are kept per project, the students paid for on a school's plan "and you",
and the date the period renews on, ends on, or the note that a payment needs
fixing.

## When a plan ends

Your projects stay. Nothing is deleted because a subscription ended. If you are
over the free plan's ten-project count, everything remains readable and
exportable, the ten you edited most recently still save as normal, and the rest
are read-only until you are back under the count or back on a paid plan. A class
with more students than the free plan holds is paused rather than closed.

Live rooms go back to the free plan's size: you and one other person. Joining
somebody else's room is free on any plan. On Teacher or a school's plan, your students
go back to the free plan's room too, and nothing of theirs is deleted either. See
how many people fit, and ending a room.

### On this page

Paying What actually moves you onto a plan Managing it afterwards When a payment fails When you cancel Invoices and purchase orders Refunds What your plan is right now When a plan ends