Lost connection with aqualink rs

Welcome to TFP.

Is the Aqualink showing as a device connected to your home network and router?

As @ajw22 no doubt has in mind, Aqualink issues usually start with WiFi. For starters, did you try resetting your home WiFi router?

A thing that caused lost connection for me in the past was the fact that Aqualink needs a 2.4 GHz network. My router (AT&T) has an automatic 2.4/5.0 GHz configuration feature that did not play well with Aqualink. It would work for a while and then spontaneously break. I had to reset every few days. To get everything stable, I had to turn that feature off and create separate 5.0 and 2.4 GHz networks, then connect Aqualink to dedicated 2.4 GHz.