Just arrived today. Filled out the form yesterday with no issues. As was said regarding the phone number, put in a plus sign in front of your country code and then your phone number including area code. Also, any dates needed to input are a little wacky. We arrived today, Jan 18 but had to input Jan 19 for it show up correctly as the 18th. Also ONLY answer question which are required with a red asterisk. If you answer, the what nationality are you question, which does not have a red asterisk, it’ll erase everything you put in up to that point.
The airport was mobbed today, per usual on Saturdays, so I suggest you fill out the form ahead of time or plan to wait in line for a long time. Also, our airline American Airlines seem to think it was mandatory so they asked us for proof that we filled it out. We took a screenshot of our acceptance and that satisfied them.
.
