Good evening, I recently purchased an Archer MR600 router, and with only 4 devices connected, when I request the console with tplinkmodem.net, it says unavailable. If I turn it off and on again, the console starts. Please note, the router has already been updated with the latest firmware version, which I'm attaching. I'm desperate; every time I turn it off and on again, I have to turn it back on. Furthermore, despite having configured 2.4 GHz Wi-Fi, some devices don't connect, such as the Shelly Plus 1PM and an IMOU Ranger camera.

Thanks to everyone who can help me resolve this issue.