Username taken

[leannet]

I am having a problem with people trying to register on my site, every name they try to register with it tells them the username is already taken, and I know for a fact that there is no user on my site with the usernames they are trying.
It has happened to 4 people now, how can I fix this?

[Dismounted]

There is a setting where if a member changed their username, their old one cannot be used for X number of days. This option is in the AdminCP and I believe it is only there in 3.7+.

[Boofo]

Is that the setting in the usegroups area?

[Dismounted]

Admin CP > vBulletin Options > User Registration Options > Username Reuse Delay

[Boofo]

LOL I saw that when I installed 3.7 but never paid any attention to it. Thank you, sir.

[leannet]

My site is only small and they have tried heaps of names, even ones that have never been on my site and it still says name is taken, please help.

[SEOvB]

its from a plugin you've installed, Disable plugins, and try to register

[leannet]

I think its fixed now

Username Regular Expression
You may require the username to match a regular expression (PCRE). The admin help provides some examples that may be useful. To disable this function leave the option blank.

I had to remove the text from the box and leave it blank.