It can be difficult to diagnose why your internet connection drops when using a specific web application. To troubleshoot this issue here are a few steps:

1. Check the signal of your Wi-Fi or broadband connection.
2. Check the connection of all the devices connected to the same network.
3. See if the service provider has any notices regarding the connectivity of the internet.
4. Make sure to restart the router.
5. Check for any potential system updates.