Ok, I have solved the problem by returning the device because apparently it's also NOT compatible with Apple devices!!!! (iPhone/iPad/MacBook ..etc) the security is too weak (not WPA3) and that's...

I did it and nothing has changed! :/

Hello, My Tplink MiFi model M7350 V6.20 keeps on disconnecting on all of my devices and especially in daylight even thought I have updated the firmware to the latest version avalible on the Tp Link...