Mind if I ask which kernel are you using? and did you experience any problems adding any addon's? I had no problems with a fresh install of Bullseye on my Helios4 but had issues when I tried adding snapraid and mergerfs on my Helios64 with the stock Bullseye Kernel.
Also Experiencing a freeze/issue When installing OMV through armbian-config where it freezes at the end while processing triggers for man-db