Your router is the problem.

Probably.

Robot vacuums almost always need 2.4 GHz Wi-Fi, and most modern routers try to combine 2.4 and 5 GHz into one network name. The vacuum gets confused, drops the connection, or fails to reconnect.

First thing: log into your router and split the bands. Give the 2.4 GHz network its own name (like “HomeWiFi_2.4”). Connect the vacuum to that. That alone fixes it most of the time.

Distance and walls matter too. Robot vacuums have tiny Wi-Fi antennas and sit on the floor. If your router is in the basement or behind a brick wall, the signal will be weak. Move the router closer, add a mesh node, or at least test with your phone on the floor next to the vacuum’s base station to see how bad the signal really is.

If splitting bands and proximity don’t help, check for interference. Microwaves, baby monitors, and neighboring Wi-Fi networks on the same channel can all mess with that little vacuum antenna. Switch to a less congested channel or use the 5 GHz band for everything else and give the vacuum its own