So, I bought the RE650 last year and was working fine, this week it started to cause a disconnection to my router, let me explain the problem briefly:

1- When 15 - 30 minutes is passed since turning it on, the extender stops from working and show me the "Connected without internet" thing.

2- As soon as it shows me this message, the 2.4 and 5 LED turns off and only the last LED is on.

3- When this happens my main router is disconnected.

4- After my main router reconnect, 2 - 5 minutes then the whole process is repeated, except that in step 1 it will be 2 - 5 minutes instead of 15 - 30 minutes if I didn't turn it off/reset it.

Looks normal since the main router is disconnected right? Well, all of this won't happen if the extender re650 is turned off, it only happens when it's on.

The extender is up-to-date by the way.