thanks for your response GovernorSilver!
I’m on OS 1.25 too. I followed the instructions in the manual numerous times an am getting an expected result (besides the tempo issues described above).
After syncing to my master loop I hit play and the sequencer starts in nicely after completing the loop.
However - once I hit stop and then play again only my master loop starts and the slave(s) remain silent. I can trig them manually and they start in sync - but not by pressing play. (as indicated by the little symbol which shows a square).

Is there anything I need to prep for the slaves to behave the way you’re seeing it? I wonder what I’m missing. cheers!