Hey, cool project! Btw, I've sent a tip to myself, how to withdraw it back to my wallet?
If you want to tip yourself you’d have to authenticate as a new user so you can claim tip, it won’t allow you the claim your own tip. So once the tip is created you’d have to go to your private browser and open the link there so you start a new session.
If you don’t want to authenticate with a different account you can reclaim the tip and withdraw it back to your wallet.