@Kevin_Z Since I first posted in April I did some testing trying different routers, a secondary location and two other operators (Telekom and Digi). Also I discovered later that phone calls also get...

@Archer_MR500 That was the first thing I did while trying to mitigate the problem. It didn't help because the router disconnects at random, sometimes within minutes after restarting.

@Marvin_S Thank you for the reply, I will do all you recommended. The location where I have this router is somewhat remote and I go there about once a month. So it will take a while.

@Kevin_Z Hello ! About a month and a half ago I bought a NX510V router from a local retailer. I live in Romania, and I am using it on the Orange network with an unlimited voice and data plan. The...