me to trying desperately to register microbrute ,I have the same problem ,
13 digits but the result in the form xxxx xxxx xxxx x,
is not accepted,I tried everything.
The hint filling up digits as hinted above ,doesn't work for me.
I want to get into the machine to change MIDI channel.
What can I do?
It is actually disapointing to buy a gorgeous machine like mikrobrute and not being able to register it.