Hello,
recordings are missing if Cubasis does not receive audio data for a certain amount of time. This can be caused by iOS, or as well by Cubasis being busy. Did your issues occur in a setting where Cubasis was really busy? If yes, could you try to reduce polyphony or disable some effects and see whether the issues are still occuring?
Furthermore, we did optimizations regarding recording of audio for the upcoming release. Thus, we expect that these problems should no longer occur.
Kind regards,
Frieder