No worries, happy to help…
You could try deleting the preferences file :
However, you can try the following to make your UR Interface work under macOS 11 (Big Sur):
** disconnect your UR Interface*
** open the following path on your hard drive:*
“Name of your hard driver" → “Library” → “Preferences”
** now delete the following file:*
** restart your machine and reconnect your UR Interface afterwards*
Also, I understand that Cubase Version 10.5 runs without any issues and, finally… I have managed to get around the delayed audio loop in Logic Pro!
Basically connected my old i386 laptop back up to the UR44C and started the DSP mixer application on there and then I turned all the faders down for the input channels in it for all my outboard synths and saved the configuration.
Disconnected the UR44C from the laptop and connected it to the M1 MacMini and lo and behold the UR44C holds the settings and I have no feedback at all… So, I have now got a a good compromise, working system at the moment.