User problem with allowed character amount at signup

I just received the following message from a new user at Starch-Smart.com:

So, When I was making my User Name - I typed in Irene and it told me I had to have 4 characters! Does not compute! I added "H" to the end and it was happy... I deleted the H and then it was happy with "Irene" Tested it by re-entering "Irene" and it again told me I need 4 characters! FYI

Anyhow, it does seem wrong to deny somebody the ability to use their name because it needs four characters if they have actually already entered five characters.

Also, I sent her two message through the messaging system. The first she told me she received email for twice and the second she told me she actually received FIVE emails. So, there is something wrong between EasySocial/Joomla/My Email and I am not sure what it would be. Do you have any ideas? I sure do not want us to be flooding people with email.

I also have been trying to figure out a way to copy her text from her previous messages but all I seem to be able to find are my messages to her and none of her replies. I am attaching a screenshot.
I hope it is OK that there are three issues in this one help request.

Sean Carney