So I tried to make a purchase and suddenly got a "Selected payment method is currently unavailable, please choose a different one." when picking Paypal as a payment option. I've used this option many times before with no issues but this is the first time I've gotten this message. Is anyone else having the same issue? Did GOG have a fallout with Paypal? Paypal itself seems to be working fine.

Some people are having similar issues as mentioned in this thread:-
https://www.gog.com/forum/general/paypal_preapproval_upon_purchase

This was quite useful, I managed to solve the issue by adding some sites to my NoScript whitelist (braintree-api.com and brintreegateway.com). My guess is that this was something new as I managed to make a purchase 2 weeks ago with no issue. In any case thank you very much :)

nvm, wrong thread.

Hi Guys! I had a problem using paypal for a DLC.
I used the GOG client to purchase the game with paypal.
After the login, paypal showed up and the credentials where entered correctly. It says: "We had a problem, try again". Tried serveral times.
I double checked the log-in on paypal itself, no problems.
Afterwards i just used gog.com and purchased the DLC there with no issues.
Regards ;)