Paypal doesn't work

I've got the account activated and well configured and it says that the payment cannot be completed on your site...

That's not a bug with Bootstrap Studio, that's a problem with you not entering the information correctly in the component/page/etc. PayPal works just fine when done correctly. Check your setup and make sure you didn't forget things and that you set it up correctly which is most likely what the issue is.

Yeah it was my fault, but I had spent so much time reviewing everything that I was starting to think that It could be the webpage, thank you

Sounds like you got it worked out. Glad to hear it and good luck on the rest!