@vnihoul77 

Hi

You may refer to the link below:

What if TP-Link Router Disconnects from Internet?

But why does the modem becomes inaccessible when it looses internet, that sounds strange no?

Any idea?

  @vnihoul77 

I can't answer for the crashing issue but you should still be able to access the router GUI Web page via mobile or laptop(wired/ethernet) 

I know when my Internet has dropped out my wifi for whatever reason makes my devices disconnect from the wifi 🤷🏼‍♂️

But I can reconnect when I open the wifi settings on my phone it shows me the wifi network and if I reselect it it will either say connected but no Internet or I think I've seen a message pop up saying no Internet  access connect anyway?

You should then be able to go to the Web page gui and log in or possibly use the tether app tp get into the router as you'll then be connected to the router locally not via the cloud. 

  @vnihoul77 

Hi

We suggest logging into tplinkwifi.net and navigating to advanced > System > Reboot > Reboot schedule to activate it. Please then monitor if the issue persists.

If the problem persists, kindly provide the following details:

1. Could you share the specific topology of your home network? For example, modem-ISP router-Archer AX55-switch.
2. We recommend that when encountering the issue, connect your device to the AX55's Wi-Fi and check the IP address. Here's how to find the IP address on your devices.
3. What was the light status when the problem occurred?
4. When was the product purchased?