Op1f 'record arm' turns off when i press play in ableton

my op1f is connected via usb-c to my macbook.
audio in/out and midi in/out are configured in ableton and on the op1f.
when i record arm on the op1f then press play in ableton, the op1f starts playing—but with record disarmed.
this happens in all tape modes.
i’ve tried troubleshooting for hours but i’m going mad.
any help appreciated
thanks : )

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