Confirm payment received question

Hello. I created an offer to sell my bitcoins via Revolut. After someone accepted the offer, shortly the “Wait for blockchain confirmation” and “Wait until payment has started” button was checked and right now I can confirm payment receipt. As I still haven’t received anything and several hours already passed, should I wait until the remaining time expires, or rather open an issue?

No, you should never open a dispute before the trading period runs out, unless there is a bug or you can be certain that the trade can not complete due to some issues with the payment method and etc.