I got the error "Invalid token - token not found", twice, when it came to actually uploading the audio recording (it confirmed the file size and the Upload / Cancel buttons, but then didn't appear to send the file correctly). The first time I didn't re-login to moodle via the app, but the second time I re-authenticated to your QA moodle (which made no difference).
I believe it's the latest one, I updated it first week of June which should mean it's the end of May release.