itch.io

If you read the message boards, you would know that Itch support is swamped. It just takes time.

If you already had an ok for a refund, you should have waited. Refunds on Itch are a manual thing. There is no automatic buyers remorse or anything like that. Buying digital goods that have no drm do not go well with such "return" policies. There need to be actual reasons, but from what I read from the message boards, they usually approve refunds. https://itch.io/docs/legal/terms#9-refunds

Opening a refund request over Paypal might cause trouble, depending on what you did exactly. If you opened an issue that the seller had to approve, that sounds fine. If you opened a dispute and forced a refund that might be not so good, especially if you made false claims in the dispute.

If you worry about consquences for not following the intended refund proceedings, the most likely consequences would be Paypal limiting your ability to open future disputes and Itch might be less inclined to approve any future refund requests. And neither will tell you so, so asking that very question is pointless and will probably result in no answer at all. But I have serious doubts that they would do so, after one incident.

For comparison, even Steam will limit your ability to request refunds, if you overdo this.

Forcing a refund is just not a good idea, if there are other options. There are big fees that might be applied in some scenarios. On Itch often a lot bigger than the actual payment price of the disputed digital item. A chargeback fee can be like $ 20. So, if you caused a chargeback that's financially very bad for the seller. If it was handled as a regular refund, I see no issues.