Forum Academy Marketplace Showcase Pricing Features

Some users can log in and some cant

Hi,
I’m scrambling here as I’m getting feedback from some of my users that some can’t log in. I have just sorted the users by date created and, from ordering them that way, there is no rhyme or reason as to why some can log in and some can’t (basically I wanted to see if there was something I did at some point which would have caused users older than a certain date couldn’t log in but that is not the case).

I have compared a user record that works and one that doesn’t and I can’t tell from that, what the difference between those two users are.

Any ideas?.
This is a massive issue for me.
Thanks