How to export recordings???

I did one of my check offs on this app and Im not sure how to get it to export (the export button disappears and reappears, and when I do click it, nothing happens). So itd be awesome if there was a "Help" button where you could go to - especially one of the answered questions about how to export recordings.

Ashla Raye about Tuner & Metronome -Soundcorset, v3.0.2