Real time midi recording not working on ipad

Why can I recording from my Korg SP-280 (yes I know it’s old, but so am I) in Write step mode but I cannot record in real time. I press record start playing, I can hear it, but then I press stop and nothing Is recorded.

That’s very curious: real-time recording certainly worked for me as expected the last time I tried it. Did you select a note or rest in the staff you want to record into before you started recording?

Yes. I’ve selected a note arrest. I’ve even gone into edit mode on the staff that I wanted. I just didn’t know if there was a setting that I was missing. It seems very on the step mode records but real time doesn’t. Both midi in mode and thru modes are checked on.