Debian 11 support status?

[REAPERSbattlecry]

I think OPs question is more about the nextcloudpi (ncp) status.
It is still in development and due to volunteer work not ready for Bullseye yet.
See:

NCP upgrade to Debian Bullseye thread

Hi all, The upgrade to Bullseye is on devel (under testing by volunteer testers). While it is not strictly required to migrate, and things should continue to work including updates, there will be no support any longer, so it is recommended to migrate. We have two options to do so. In either case Always back up your instance first, and if possible also snapshot your VM or clone your SD card Backup everything, start from scratch with the latest image (Bullseye, whenever that is released) and t…