Hello,
referring to the paypal purchase option, if order is made as guest all goes well but if order is made as logged in user something went wrong and the paypal popup appears just for a while and then disappears.
I just realized it and I don’t know when the issue occured, anyway I’ve deactivated all plugins and issue persists but once a switched to the default theme the issue disappeared.
Here the error I get
https://postimg.cc/p9yPmyD4
I’ve created a staging site so you can safetly have your test there.
Thanks in advance for the support
Alessandro