your initial question was:
I can't find, in the Server Validation options, an option to ensure that at least 1 uppcase, 1 lowercase and 1 number are included? 
the regular expression i gave was for the server validation on the registration page.
it was not intended to be used for the jquery regular expression which you said was already working.
the questions I answered where for registration not for login, you did not ask initially about login, so i am unclear why you are directing me to try the login page?
It's just one thing after another and I've completely lost the will to live with all of this now.
that's quite melodramatic
the jquery regular expression for Upper, Lower one Number, minimum of 8 characters is:
(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,}
The same regular expression cannot be used in Server validation though, as it uses a different regular expression engine.
