Is it only me that finds the app useless for making payments

[Fedupkid]

Hi everybody I have around seven lines and devices and cannot get the app to take some if at times any of my payments it just says couldn't take this payment contact your bank which I have done and they say if the money is there they will pay it. I can use the phone automated system seconds after with the same card and the payment goes through! Any ideas.

[MI5]

@Fedupkid 

Standard for O2's flaky payment system.

You can reach the Payment Management team on 0800 902 0217.
The opening times are:
Monday to Friday – 8am to 8pm
Saturday – 8am to 6pm
Sunday – 9am to 6pm

[Cleoriff · Accepted solution]

Just to add, if it helps @Fedupkid  a guide on ways to pay here Guide: How to Pay Your Bill (Contract)