Unable to access my apps

I have been using a Murena Fairphone 6 for about a year. I have also installed and used the app “minimalist” which I like very much. However, I have had to recently deactivate minimalist, expecting to return to the standard interface, but what happened was that I lost the ability to select and access apps (including system) : the screen is black, even though everything seems to be working (I get notifications for new emails etc). I have tried to reboot in safe mode but nothing has changed, I still cannot view the app selection. As a consequence, I cannot even access the system to try and hopefully find a solution.
Has anyone ever faced a similar issue ? And could offer a solution ? I would hate to have to reactivate my old iPhone…
Many thanks in advance !

Perhaps try Settings > Apps > See all Apps > Bliss launcher > Storage and cache > Delete storage.

Thanks for this suggestion ! I have tried it, however it didn’t resolve the issue.
In the meantime, I have tinkered with various options of the system, and —lo and behold— the issue vanished, I have now again access to all my apps (the only thing is that I lost the whole folder structure but that’s a minor issue). I have absolutely no idea which parameter adjustment to which part of the system worked… but it worked and I am operational again !