Hello,
I apologize if this is not the correct place to post this issue, but this is the only place I thought I may get an answer.
I was using Stylish for my styles, and I had quite a few custom styles that I had made, and I didn't create a backup for all of them. Suddenly, the extension stopped working with the following message:

And I can't go and backup my styles.
Is there a way I can find the styles I made and export/import them manually (I'm using Windows)?
I appreciate if you can help me
Thank you
What I did:
See also https://github.com/openstyles/stylus/wiki/FAQ#how-can-i-export-my-user-styles-from-stylish-for-firefox-to-stylus
Thank you @TWiStErRob . It was so stupid of me that I didn't check that I can indeed re-enable the extension. I appreciate your answer.
Just while we're at it, is there a way to selectively import the styles into Stylus? (not all the styles altogether)
You can edit the file before importing it in any text editor or in a JSON editor.
Most helpful comment
What I did:
(you may need to write explicit filename, my Stylish backup was .dms, but Stylus looks for .json)
See also https://github.com/openstyles/stylus/wiki/FAQ#how-can-i-export-my-user-styles-from-stylish-for-firefox-to-stylus