No credit card required
Browse credit cards from a variety of issuers to see if there's a better card for you.
Who knows. Remember computers do most of the work and I have seen with other lenders that a failed payment causes fraud flags to be triggered that make the account more sensitive in the future for some time. I am sure if that is true for Chase that under human review, you will be fine.
We could give you 100 opinions and that's all they would be... opinions.
All you can do is wait right now and let them make their next move. Hopefully, they won't make a move. Like you said, losing the APR isn't a problem, you PIF.
At least you were self-aware of the mistake and corrected it immediately. Other than that, anything else is just conjecture. We could tell you a 10 different scenarios and they'd apply Scenario #11 with you.
Just be patient, let time take care of the situation and then see what happens next.
I'd just be happy with the fact that you caught the problem this quickly.
Follow my financial journey: http://www.frugalrican.com
I would probably wait till next month, but up to you. Since Chase Executive office call is reputed to be only a soft pull, I guess no harm trying now either.