Can't e-file US 2019 returns, website telling me information is incomplete. Asks for state/zip, but I don't live in US. How can I move forward and efile?

I live in Canada, and was trying to file my US taxes for 2019, since I'm a US citizen. I've filled out all the information, and I've paid, but it won't let me file and save my returns; It says that I'm missing personal information, like 'state and zip.' Problem is, I don't HAVE a state or zip. I have put in my Canadian address, and I've gone through the entire 'My Info' section again to make sure I haven't missed anything, and I can confirm I haven't.

 

I have tried logging out and back in, and I've tried Chrome, Firefox, and Edge and keep getting the same issue. I have also confirmed that my $90 payment has gone through. What can I do to either get this filed? Am I better off just asking for a refund?