After I upgraded to iOS 14 (and now 14.0.1) I’m unable to export Sleep++ data via email.
No matter which mail App I configure as default mail App, Sleep++ always opens a a mail compose screen that looks like it’s from Apple’s mail App (instead of the App I configure), with this behaviour:
if I send the mail to myself I do not receive it (and it’s not in my Sent folder)
if I cancel sending the mail, but save it, it does not appear in my Drafts folder
I tweeted _ about this, but unfortunately I did not get a reply.
I suspect this is an iOS bug rather than a Sleep++ bug. If you use the share sheet anywhere it seems to be popping up the default Mail app which is annoying.
I discovered I have exactly the same problem in another App, so you might be right!
Interestingly, what Sleep++ and that App have in common is that they both don’t use the share sheet. They immediately open a compose mail screen. And that does not work at all…