I recently had my 2.4 GHz network turned off because it was causing interference with Bluetooth. However, I forgot that Roborock was using the 2.4 GHz network, so I turned it back on. Big problems now.
After booting it up, I waited a few minutes and tried to access my Roborock. The app couldn't find it, said the network was slow.
I tried resetting Wifi connection and It would fail on the step "Transferring information to device ..." (step 2).
So I completely reset Roborock, uninstalled the App and started new. Now it fails on the third step "Device is connecting to the network". I've tried both of my 2.4 Ghz networks and both have the same result.
Finally I gave up on the app and just pressed the button on the Roborock so it would start cleaning. Since I had reset it, I figured it would wander around and remap, but it actually positioned and cleaned with the previously known maps. So I'm not sure resetting is actually doing anything? It certainly didn't clear the maps.