Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Log into any Microsoft account you may have on this link, are you able to find the new subscription and if so, check the expiry date listed on your subscription, is that listed correctly.
https://account.microsoft.com/services/
If not, go to the Payments and Billing section, is it indicated your payment for the new subscription has been processed correctly.