Digitone 2/Overbridge 2 problem

Hello everyone!

Digitone 2, with the latest OS, does not connect to Overbridge 2.19.
When connecting Overbridge, it shows a message that the OS of Digitone 2 is incompatible with this Overbridge.
I have tried reinstalling Overbridge and the OS on my Digitone 2, but that didn’t help.

What could be the problem?

Thank you in advance!