I tried, but on that page it’s asking for support ID (upper right corner in the game settings)... There’s nothing in the upper right corner in the settings in Thronebreaker. It’s mandatory for contacting support, so no dice unfortunately.
Was there any official word yet?
...
More people having the same problem:
https://www.reddit.com/r/gwent/comments/a2tbv3
Thank you for reporting this! This field shouldn't be in the Thronebreaker form - we will remove it.
For now, until the form is fixed, please fill the field with anything random.
Sorry for the inconvenience!