Trouble using Tuta DuckDuckGo Browser

[fjc1029]

• This is not a feature request (existing functionality does not work, not missing functionality).
  I will request features on forum or via support.
• I've searched and did not find a similar issue.

Describe the bug
Hello! When using Tuta Mail with DDG browser on Windows the inbox always goes offline, then I can't use it or another browser until I log out and reboot the computer. However, when I first use another browser instead, everything works fine until I go to DDG browser to use Tuta Mail. Is this browser supported by Tuta, as you have it in your blog post of secure browsers, but not in your list of supported browsers. Please advise. Thank you very much!

To Reproduce
Steps to reproduce the behavior:

1. Go to 'login'
2. Click on 'any email or folder'
3. It goes offline and freezes.
4. Can't click to reconnect from offline.
5. The whole inbox freezes.

Expected behavior
I expect the inbox to work in DDG like the other browsers, however, it just freezes and then I have to reboot the computer.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• Windows 10 Pro
• Intel(R) Core(TM) i5-3475S CPU @ 2.90GHz 2.90 GHz
• DuckDuckGo Browser 0.76.3

Additional context
None.