It sounds like a firewall or security setting on your corporate wifi is preventing your Glide apps from loading.
What is the URL or domain of the app affected?
What do you mean “is not working”: not loading at all, some functionalities are not firing?
Have a look at the following thread and read until the end. The issue has since been solved, though your app might have been affected and you might need to follow a few steps to fix the issue.