Can't enter credit card

[#1]

No matter how hard I try, my credit card always appears as "inactive" in my payment method list. I'm a foreign student in the UK and I opened a bank account here in which I want to get some upwork money in. But I just can't. What is wrong with this? Please help me.

[#2]

Hi Javier,

I can see you were able to submit a support ticket with our team regarding this. Please allow some time for our team to review and they will update you directly via ticket as soon as possible.

[#3]

Alright. I tried to input my bank account details yet again, in case it helps, but it seems it doesn't. Thank you for your swift response. I hope the team can get it sorted yet and I get my money as soon as possible: this is very urgent.

Looking forward to your response, 

Javier