Refunds
Within 14 days of a payment, ask and it is refunded. You will not be asked why, and there is no form.
How to ask
Write to support@quoincloud.com from the email address on the account, or reply to the receipt Paddle sent you. Paddle is the merchant of record, so Paddle makes the refund and it goes back to the card that paid. That usually lands within a few working days, depending on your bank rather than on either of us.
After 14 days
Ask anyway. If the service failed you, if it did not do what this site said it would, or if you were billed for something you had already cancelled, it is refunded. What is not refunded is a month you used normally and then changed your mind about, which is what cancelling is for.
Cancelling is not the same thing
Cancelling stops the next payment. It does not refund the one already made, and it does not cut you off part way through a period you have paid for: you keep the Pro limits until the period ends, and then the free ones apply. Cancel from the dashboard at any time.
Your documents either way
A refund does not delete anything. Dropping to the free plan can only refuse something new, so every document you already have keeps opening, syncing and exporting, and you can take all of it with you as Yjs state from the dashboard. Deleting your work is something only you can do, from the settings pages. The pricing page explains what happens at each limit.
Chargebacks
Please ask before raising one. A refund costs nothing and takes a day; a chargeback costs a fee and takes a month, and the only thing it adds is the delay. I would rather give the money back than argue about it.