OT and MnM midi issues

Hi, I didn’t know where to post so I went general. I am having problems with the OT and MnM playing together. Sometimes and only sometimes, the MnM stops responding to transport and midi input from the OT.

The set up is like this
Axiom send on CH11 to OT in
OT out to MnM (MnM channel base is at 1) tetra from MnM thru channel 10 and shruthi from tetra thrus CH12

The MnM is set to receive transport but not send, OT is set to send transport and clock. Twice now when I have powered up the transport hasn’t responded and I have had to switch off and on again to get it running.

Any ideas?