Login/Register system doesn't work on phone

Hi all! I’m trying to figure out what’s going on with my website. I’m using the login/signup form from Wix, and it’s not working when I’m testing it on my phone. You guys can try it out as well: https://www.infectiogames.com (this is not a finished work of any kind). This works just fine on a laptop/desktop, just not on any kind of phone…The thing that sucks is…our website will be mainly used on a phone.