What device and iOS are you using?

Could you direct me to some examples please?

You can already record voice calls. But using an MP3 file is another way that would be good to add.

As per the release notes. This has been temporarily removed due to major crashes. It'll be back soon.

Passcode has been removed and uses solely Face/Touch ID else device passcode in 5.1.

This is very strange. What iOS are you using?

Have you tried reinstalling?

Did you sign up with Google and/or Facebook only?

The same way. Swipe left to delete.