Put site live but have a few problems, email wont recognise even when valid, also

Hi i just tried to create a new profile to test and for some reason its not working.

It keeps saying email not valid even when it is and when i try to go through the sign up process it just keeps jumping back to step 2?

I had tested creating account before an it worked so don't know why there is an issue now,, any ideas?

& I seem to forever be getting invalid token which is driving me mad, i dont know why or what is wrong

thanks