Hello Robert,
I followed this guide:

https://guide.websitex5.com/en/support/solutions/articles/44001981953-how-to-activate-and-use-the-paypal-commerce-platform-payment-method

if i press connect paypal account

i get his:

after i type my country i get an pop up :

Do you get the same? Do you do the same?

Can there be a firewall interfering? check!

I disabled my firewall and it has gotten me up to this point until I selected the ok buttn.

I am unable to proceed

Have you also deposited all your data at Paypal Commerz. It seems that some data is missing and therefore it can not establish the connection.
You should also create your own payment error page and confirmation page and set them in WSX5.

All good now, appreciate your help. Thanks!