File handler configuration does not update

Hi team,

We recently had an integration with Microsoft file handler.
During the deployment of the application, we encountered some issues, so we updated the file handler configuration via the manifest file.

Some users who installed our application still see the old file handler configuration and are experiencing problems because of it. They want to either update it to the latest configuration or remove it completely so they can continue their work normally.

We did try to guide them to reset the file handler cache as in: 
https://learn.microsoft.com/en-us/onedrive/developer/file-handlers/reset-cache?view=odsp-graph-online

But seems like only some of them got the updated config, while the rest keep getting the old one, even after 1-2 weeks.

Do you have any advice on how to completely resolve this issue?