When trying to export a modpack modrinth give a Serialisation error with the Json file. Also for whatever reason when I now import a modpack or install new mods into one, the mods do not sync with modrinth instead showing up as individual files. This started after I tried to add more mods into an existing modpack that I had made a week earlier and have already updated previously. Also now whenever I launch the app there is a weird white border along side it that directs me to the creator support website page.
Tried:
Reinstalling the app
Clearing the apps cache
Referring to an article on the Modrinth support page https://support.modrinth.com/en/articles/8797699-issues-using-special-characters-in-instance-names (did not help with the export error)
Restarting PC and reinstalling the app.
Making a new modpack to see it the mods will sync up to the cloud (they did not)
Any ideas on what might help?
Why do I encounter issues when using exclamation points or colons in my instance name?