Hello, PayPal has stopped working. Don't know why?

Hello Bedřich,
I am sorry about the issue.
What version of PHP are you using in your hosting space? Could you please provide the URL of your website so that I can take a look?
Thank you.

Online translation:

Cześć Bedřich,
Przepraszam za problem.
Jaką wersję PHP używasz na swoim hostingu? Czy mógłbyś podać adres URL swojej strony internetowej, abym mógł to sprawdzić?
Dziękuję.

Interestingly, the Stripe payment gateway works without problems. https://2din-radio.cz

Hello Bedřich 

As Eric mentioned, it would be of great help to us in order to better analyze your situation if you could let us know here what version of PHP are you using in your hosting space. Could you please provide the URL of your website so that I can take a look?

Thank you

Stefano

Version PHP 7.3 

https://2din-radio.cz

Hello,
I recommend switching to version 8.2
I received your project, however it does not contain the PayPal Commerce Platform payment method, have you removed it?
I can see Stripe and a QR based payment method instead.

Eric

No he didn't remove it.

https://2din-radio.cz

Preview

Hello,
this version of the project contained PayPal, unlike the previous one, thank you.I have uploaded it as a test in my hosting space, and the payment worked:

https://eric-c.websitex5.me/progetti/2din-radio.cz

This means that the issue is with your hosting space.Please set PHP to version 8.2 and contact the support of your hosting provider so that they can investigate the error 502.
I remain available.