Problem of Creating Snapcraft Developer Account

Hey everyone,

I’ve encountered a problem when trying to finish signing up for a developer (ubuntu) account on snapcraft:

The last step I’m able to reach is the a “Developer Programme Agreement”.

When trying to continue, the following error message is consistently shown:

Apparently, neither a chromium-based browser nor firefox seem to resolve this issue. Furthermore, connection status of my VPN did also not result in a different result.

Does anyone know or suspect, why?