Are USA players allowed to use Playbetr?
Also, Are there any KYC requirements needed to cashout my withdrawals?
No, players from USA aren't allowed in PlayBetr. Because USA is in the list of Restricted Jurisdiction.
For various legal or commercial reasons, we do not permit accounts to be opened or used by customers resident in certain jurisdictions, including the United States of America (and her dependencies, military bases and territories), ~snip~ By using the Website you confirm you are not a resident in a Restricted Jurisdiction.
And they may ask you to go through KYC verification during withdrawal if they find anything suspicious. I was asked to submit verify my identity during my first withdrawal. However it was done without the verification process. I have shared
my experience here. You can find more information about KYC verification in their
Terms of Service.