How to revert to double colons

Hello there, new user here.
I think I messed up something while playing with the settings.
Instead of a double colon, my rems create concepts and descriptors flashcards with a single colon.
Is there a setting to revert to double colons? The single one is, for obvious reason, not ideal.

There was once an option in the settings allowing users to choose single colon to make flashcard. But now I can’t find it either. I’m using the latest version 1.2.9 of remnote. Maybe trying reinstall your software would help.

I’m using the web version