@Ivaylo yep, still disconnecting. There isn't an 'always on' option and was set to auto.

@paulcanning Thanks! I clicked 'on demand' and set idle time to '0'. That should work. Very much appreciated

@paulcanning Thanks so much for response. That's the option I can't find. The connection type is greyed out.

We are a large household with a lot of devices using this modem router. It is disconnecting devices and then reconnecting them a few minutes later. I believe this is the 'connect on demand' setting...