Payment Method Registration Errors [Error Code 401 and 601]

[Tyro]

Had the issue for about 2 weeks, trying every few days, either got 401 or 601. using either Mastercard or Visa and even trying to obtain Crysta with Paypal with no luck. Decided to try AmEx and surprisingly it worked, on two accounts even. Just wondering if anybody else tried using AmEx and having it work or not work?

I've always been trying to pay with AmEx and nope... I doesnt' work.