Hello, there are quite a few issues coming up for 0.4.8, so I would recommend you downgrade.
You can also run a healthcheck to look at logs in the app-management:
If downgrading doesn’t work, you can try these steps that have worked in the past:
1st Possible Solution
You can try to uninstall it, but don’t delete the AppData on uninstall and install it again. Sometimes I’ve had reports of it getting stuck.
2nd Possible Solution
Uninstalling the app store and then reinstalling might fix the glitch.
3rd Possible Solution
You can try to reinstall CasaOS completely.