Refunds
Purchases are not available in this preview, so there is nothing to refund and no extension to request.
The terms below are the planned policy for when checkout exists. They are not an offer you can accept today.
Access
Access lasts 90 days from purchase. It is a one-time charge, not a subscription. 7-day refund: email the support address published with the domain within 7 days of purchase for a full refund, no questions asked. A refund ends access. This preview has no mailbox and no domain.
Fail extension
Did not pass? Email the support address before access ends and 60 more days are added, free. That is not a promise that you will pass, and it is not available until purchases exist.