I want to allow caps & numbers in the usernames. I tried this plugin "Restrict Usernames Emails Characters" which works really well but created an issue with my Pro Sites URL registration links removing the dots (.) from the sites URL so it would look like this (theirsitemysitecom) instead of like this (theirsite.mysite.com) and I would need to go into the sites settings to fix it.
It took me while to find the plugin that was causing the issue and it had to be one I really need/like.
I have looked for others but they all out of date in their updates so not compatible at all.
Would anyone know of a solution to allow characters, caps and numbers in usernames please.