Problem syncing MRCC MIDI clock to DAW (Reaper)

[Dark Waves]

There's another device you could consider, the Midronome, that isn't as expensive as the ERM.  Sadly most, although not all, DAWs seem to require something like MTC as a sync source, whereas most hardware sticks with MIDI clock.  The DAWs can generate clock, too, so syncing the other direction is easier.

As for syncing the MRCC, from what I recall, it just passes through clock, but doesn't sync to it, so you either would use the internal clock as the master, or just route clock from your upstream source to whatever needs it.