Unable to make payment

I am also unable to make a payment. However only on Chrome, Edge worked. Chrome not only does not allow any credit card number it will not show the ones you have saved either. This is on multiple computers. Please fix the issue.

Same exact experience as the original poster and my Bill is due today.

Invalid Credit Card Number.. the entry format shows 2222-2222-2222-2222  but only digits are allowed 2222222222222 no other characters register.

Fix This! Seriously thinking about heading back to Verizon.

Using Latest FireFox

STOP pretending it is sth on customer end, I have the same issue since June, clearly you guys want to make our lives miserable, I considering switching to the AT&T PRepaid service

6/2019, and I'm having this issue. REPEATEDLY..

How is it that T-Mobile's team of "engineers" can't either share a workaround, or actually - gasp - implement a fix?

Seriously, the UX on this webpage is godawful...so many weird login quirks.

Wow, 4 years later and they still have the same issue. Worst service ever... ¡NUNCA! 

Same problem here for 2nd month in a row. Called Customer Service and it took 4 times explaining the problem for the girl to understand, even after walking her through the Pay My Bill process and explaining the steps as I proceeded.  The payment method is still in the system as customer service can see it but it's not showing up online (Add a payment method) is shown but it won't allow adding the same card back in .  (Invalid card number).  

Someone needs to fix this problem.

Gracias

I'm still having issues making payments via cc or checking account online, keeps saying "Enter Valid details", this has been happening for the last several months when they went with new online format. It's frustrating for this is the way I pay my bills, ONLINE.  When are they going to get this bug fixed...customers shouldn't have to keep waiting or deal with these issues when trying to make payments. Keep it simple.  No one seems to understand when I call to get assistance.

It's the programming department...FIX this BUG!!!!

I also cannot pay my bill.  I have been trying for 3 days now.  Online I see "Enter a valid card number".  On the phone it says it can't process the payment with the card number I provided.  I am using the same card I've used every single time for the past how many years.  I have tried Chrome, Edge and Internet Explorer.  I have tried using the T-Mobile app on my iPhone, and it gives me the same error.  If T-Mobile wants their money, they need to fix this.

Only way to pay them is to call 611 and speak to a live rep. Their systems online and automated are down. They didn't even have my password correct and I only use two passwords so I know they were incorrect. Amazingly my payment went thru fine with a rep so it makes no sense why the online or phone pay won't work. Make sure they waive the fee they charge to pay thru a rep.

Having the same problem today, card that always worked can't even be filled out , says right away, enter valid nr. I guess my phone will be turned off, called the 611 line lady didnt know. why card dont work. Use card all the time. had same thing happenend last December.