Profile manager issues

Hi, since the Big Sur update we have issues with Profile Manager. We can log on to the web (servername/profilemanager) but it's blank. When we first got this issue we could sometimes access it but it's been worse and worse. Now we've not been able to access it for about a week. We've tried several restarts, done all updates available and connected with new tokens to School manager and VPP.

We can see the MDM server is connecting to School manager but updates are few. (On ASM settings page). We're running on a Mac Mini (2018) i7 with 16GB ram.

In activity manager we got postgres running 100% on 1 thread most of the time with _devicemgr as user.

We've tried to manually delete tasks but can't clear completed tasks. (Don't know if this is the issue or not) using this: sudo -u _devicemgr psql -U _devicemgr -d devicemgr_v2m0 -h /Library/Server/ProfileManager/Config/var/PostgreSQL-12 -c "DELETE FROM library_item_tasks WHERE completed_at IS NOT NULL"

We can clear the active tasks successfully.

The system log is full of these:

(com.apple.mdworker.shared.0B000000-0400-0000-0000-000000000000[3416]): Service exited due to SIGKILL | sent by mds[96]

Don't know what to look for or try anymore. Any tips or suggestions are appreciated.