can't register – DrChrono OnPatient Portal Review

was excited about trying this app, but can't. after downloading, it opens with a log-in screen. I haven't registered yet because I just got it. and it won't let me open it to register. no help at website--it also requires a registered email. can't find a way to contact the company for support. even if I'm doing something wrong it shouldn't be this hard to figure out.
Review by kp53 on DrChrono OnPatient Portal.