Even though the app features AMEX as a selectable form of payment, when you enter your AMEX card number, it reads it as an invalid card.
The problem arises, because:
- all AMEX card numbers are only 15 digits in length
- the AMEX security code is 4-digits in length size
The Sling app itself, only recognizes cards numbers that are
- that are 16-digits in length
- and only recognizes security codes that are only three digits
Thus making impossible for Gold members who pay with AMEX, to use their favorite method of pay