General process:
- Pay invoice
- Subscription expiration is updated upon receipt of payment in full
- Renew master license after subscription is extended
- You can view the current expiration on the support site
- Renew expiring applications (Forms, Laserfiche Server, connector profile creator licenses)
Ideally all three steps happen before expiration to avoid any system outage, but it is possible to renew after expiration.
Both step 2 and step three can be configured to happen automatically within LFDS if you are on LFDS 10.4.3+ and Forms 10.4.2+.
However, if the master license renewal is failing on a system that hasn't yet expired, it is not likely to be because of the subscription expiration date.
You mentioned "it doesn't exist in the dictionary yet" as the error, which sounds like an activation key issue. Perhaps the original activation was done via the activation tool, or you are encountering an unexpected error with renewal.
I'd recommend opening a support case and including the exact error, since even if the expiration wasn't updating, you shouldn't get any errors about "not existing in the dictionary".