Please allow us to update the game without active subscription

[SamSmoot]

hmmm a possible solution is creating a trial account ,log using trial account download and then log in with regular account

Unless he has existing character, which the trial account won't see. Still, this is a good idea if you can install the trial to a different folder, then after it's downloaded and updated, copy the updated files into the active game folder. (Assuming you can find out which files to copy.)
One the updated game with original characters is up and running, close and uninstall the trial.