Stripe Gateway Not Working In ProSites

Hello, I have tried enabling Stripe in ProSites, however, when I click save options, it does some weird stuff! First it doesn't enable Stripe (the checkbox unticks itself), second it disables PayPal, third it deletes my custom CSS for my pricing table, and fourth, every time I attempt to enable Stripe it creates a new ProSites page. I tried enabling it three times and it created three new ProSites pages!

Also, I can't seem to change the url of the ProSites page from mydomain.com/pro-site to mydomain.com/something-else.

Any support will be greatly appreciated!