Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Greetings!
This is Tin, I'm happy to assist you. Looks like you're unable to use or pay using your card to Microsoft. Sorry to hear that.
Have you tried to use different browser and check if the issue persists?
Have you tried to use different card already?
If the issue persists, plealse reach the MS Accounts & Billing Support:
Kindly open this link: https://support.microsoft.com/contactus/
Ensure that your MS Account has been signed in (the one with the subscription)
Type "Chat with an agent" and hit Enter.
Please click the "Contact support"
Please select the "Products and services"
Please follow the prompts to connect with a live agent.
You may also choose the "Call me back" option if you prefer to receive a call.
Once you're connected to the Live Agent, please let them know about your issue so they could check your account and address your concern.
Thanks,
Tin