I still cannot change my card. 

I'm having a similar problem, asked 3 threads up, I've cleared my cache, tried in three different browsers, no change. I still cannot change my card. 

I see my colleague had already started trying to help troubleshoot this problem in your original thread here. Please follow this up further there and disregard this moved thread.

Thank you for your help, I will respond in the original thread here in a bit.