Why am I unable to use the Facebook security code in regard to Messenger?

[iMore Question]

Fb sent me a security code, but the app won't move on when I enter it

 

[Just_Me_D]

I don't have a Facebook account, but hopefully, a member who can answer this question will respond soon. In the meantime, feel free to peruse possible remedies via the Facebook support site.

https://www.facebook.com/help/413023562082171