Jake
Welcome to Flyertalk, and thank you for identifying yourself.
1. Do all card issuers treat CardIt transactions as purchases, rather than cash advances?
2. Is there any prospect CardIt will accept American Express?
3. Any problem using CardIt to make larger than required payments, or extra principal-only prepayments?
1. Yes, it shows up and is handled the same as any other charge.
2. Yes, but not immediately. We are exploring the possibility of adding them and hope to do so soon.
3. There shouldn't be. Payments from Cardit look like any other payment. As long as your lender doesn't require principal to be paid through a different channel, it shouldn't be a problem.
Thanks for your interest in our company. Feel free to post any other questions here or to contact me directly. Regards