Due to changes in the Gmail app, Oversec can not longer directly enter text into the body of an email. Please use the compose button to compose an encrypted email, then paste the encrypted email into the Gmail app.
Invisible encoding is not supported in emails, please use Base64 or Ascii-Armored PGP instead.
On Android 4.x, it is not possible to display/decrypt encrypted mails. However, you can still use the GMail app to compose and send encrypted mails.