Just being curious: what exactly is "Send Direct"?
Does that mean that as soon as you finish an email it gets sent versus being parked in some "Outbox" awaiting further confirmation to actually send?
I found the following link:
https/help.bananatag.com/hc/en-us/articles/202920479-How-to-set-up-Send-Direct-for-Gmail-or-Google-Mail
Per the link Banana Tag seems to take a great deal of control with respect to your email activities. May or may not be what you want to be happening...
E.g.: "Read, send, delete, and manage your email".
The next link may help you drill down to the applicable settings:
https
/help.bananatag.com/hc/en-us/articles/214015323-How-do-I-change-the-default-settings-for-Bananatag-
My thought is that the relevant configuration settings may be buried somewhere as a change may affect what BananaTag gains from managing your email.
Perhaps they want some control ("Send Direct") that you have not provided.
(Cynicism conceded.)