Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Thank you for taking the time to explain.
Your payment was due on the 14th of January so when you added your new payment method, the overdue payment was paid.
Here are a few steps you can use to troubleshoot account warning:
Run the SaRA activation troubleshooter: Run the SaRA activation troubleshooter (https://aka.ms/SARA-OfficeActivation-Alchemy), and select the Office option. When prompted, select the option that best describes your situation.
Reset Microsoft 365 activation state Run the Microsoft Support and Recovery Assistant (SaRA) to reset the Microsoft 365 activation state(https://aka.ms/SaRA-OfficeActivation-Reset)
Turn on Recurring billing and make sure your subscription is active: https://account.microsoft.com/services
Uninstall and reinstall Office 365.
Warm regards.