When trying to make a DDO purchase (DDO points, to be precise), the login procedure to Paypal is stalling. I sent a ticket to Xsolla, but I would like to hear what else you might advise.

In the usual Paypal secucrity check window, I'm asked for my username and password, but then it gets stuck at the point when I'm expecting an SMS with a verification code, but none arrives. Paypal's page is showing a spinning waiting wheel endlessly and no error message is coming up.

Paypal payments are working otherwise for me and previous D&D Online payments with Paypal were working as well. There also is more than enough money on my account.

I tried the following, but it didn't help:

Using the external store by placing a checkbox at the "external store" entry at the very bottom of the UI settings in the in-game options.

Switching off two-factor authentication for Paypal (so no SMS confirmation code is expected).

Deleting all browser cookies, history etc. in case it's related to that (although the game seems to use its own browser).

Switching off the entire Windows firewall.