Hi Tom
It's almost definitely not the Lanpak expiration that is the root cause. Lanpaks are not required to run Adagio, only if you want to open the same module multiple times.
Renewals don't come with activation codes. Upgrades do. The last Lanpak upgrade was back in 2017.
To troubleshoot this over the forum, we need a more precise explanation of the issue than "no users can access Adagio over the network". What is the exact error message? What's the mapped drive letter and can a user browse to that drive via File Explorer? Finally, what else changed besides the Lanpak expiring, which is a red herring?
Steve