I don't understand what you want to do. Is the internet connection between your client and the hub or between the hub and the data sources used in the apps?
If you have no access to your hub then you can't view the apps. You can't view them offline.
If your apps can't be reloaded because the data sources can't be reached via internet then the apps won't be refreshed, the reload will fail and the apps will show the data that was loaded the last time they were reloaded succesfully.