@pasxa check to see if your auxiliary channel is muted for the punch in FX. Hold the aux button down and see if the red lights are on/active for all your channels 1-8. Especially the track you’re trying to effect. Very easy to accidentally turn this off.
MTP file transfer does not work in Mac environment, op-xy crashes as soon as you view files inside;
after pairing the OP-Z with the OP-XY, the OP-XY no longer sends midi out with other devices (disassociating all the midi devices and re-associating only one returns to work);
it is practically impossible to use multisample with personal samples.
sometimes the graphic display of the sound wave does not match in the drum track (especially in zoom out with sampled sounds)
in the external midi module is not working properly (you cannot decremental the bank and program values in the pattern);
Improvements
Enlarge the characters…in the op-1 field everything is much more readable;
Duplicating a Bar only duplicates the notes, step components are not duplicated.
(Odd that people are having issues with MTP on MacOS, been working without a fault here on my M1 Pro MBP running Sequoia for me. Make sure you’re using the latest version of the Field Kit app, they just released a new version a few days ago)