why once this issue happen my hotspots start malfuction, i cant use my hotspots now after icloud is fulll or a message pop out stated cant back up and now i completely fail to use my hotspot

Use these steps first

Restart the iPhone or iPad that provides Personal Hotspot and the other device that needs to connect to Personal Hotspot. Make sure that you have the latest version of iOS. On the iPhone or iPad that provides Personal Hotspot, go to Settings > General > Reset, then tap Reset Network Settings.

If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi

The Hotspot is a carrier-specific feature. Contact your carrier, if it is not appearing on your device.

Also, check the following

1. Network coverage and stability
2. Data Balance
3. On your windows (See if WiFi Auto Joins is enabled)
4. Also, check if you have any stronger WiFi signal around your computer.

AlexLai8383 wrote:

hotspots cant be connected

The hotspot cannot be used to take a backup of your device on iCloud.