This is an oddity to me and it bugs me no end.
I recently had to make a support request re my B205D, (now resolved by me), and had great difficulty doing so. I still have no idea where to go to do this. I have no idea if a MUSIC ID login is required to do it but the impossibility of achieving that is a subject in its own right! Working email addresses are apparently 'Valid' / 'Not Valid' / 'Not Acceptable' / 'In Use' all at the same time as the system prefers!
I eventually clutzed my way through by a lucky find of an email address which I used and which got a response, (not particularly helpful in the first instance as the original request with diagnostic info was obviously not even read). This was nowhere to be seen in the dedicated MusicTribe/Behringer site.
Once this was received I then could not find out where to go to access the original request and its progress. I still have no idea of where I can find my own requests. Is this another instance of a manufacturer cutting costs by creating a (free) "community forum" for us to do the work of its own support team and doing everything it can to hide from its customers any path of contact which require a response? Or am I just dim and getting dimmer?