- Refund PayPal donation
- Deal with chargebacks
- Call PayPal support
- E-mail PayPal support
- Enable PayPal two-factor authentication
Note that you’ll probably have to be logged in to PayPal before the links will direct you to the right page. Gotta love PayPal’s care for their users.
Streamlabs don't have anywhere near the anti-abuse features they need; please upvote my Streamlabs suggestions for counteracting PayPal abuse.