Issue following password reset

Hi folks,

Not sure if this is the right place to be posting, so I apologise if it isn’t.

After the Heartbleed issue was revealed, I used the ‘Bulk Password Reset’ plugin to reset all of my user’s passwords. Now, only a few administrators (but not all of them) can log into the admin CP area, and all my non-admin users can’t log into the member area, despite them all using the new passwords they were assigned by that plugin. Further, new members who sign up to the website (i.e. those who joined after the plugin was used to reset passwords) also can’t log into their accounts.

I posted on the plugin’s sub-forum for help but didn’t get a response, unfortunately. I’m uncertain if this is an issue with that plugin specifically, or something else.

Specifically, when they attempt to log in, users are met with a ‘403 Permission Denied’ error.

I have absolutely no idea where to even begin to try to troubleshoot this issue, but I would appreciate any help anyone could give, please.

Any ideas, please?

Thanks in advance. 🙂
Dave