I have had the Roborock S4 for about two months and I use the roborock app. It was working fine but lately it keeps saying off-line. When I clicked under the robot it just shows loading a map and won’t load anything so I can’t even click on the icon to update firmware. The other day I played with it by using the plus button to add a new Robo rock and after about five times I finally got it to get online and then I exited back out and went into my robo rock map and it vacuumed. I was hoping that fixed it but today it’s off-line again and when I try to add a new roborock, it’ll connect to the Wi-Fi and connect the roborock to WiFi, but won’t do the third step and just fails. I tried multiple times and can’t get it to get online. What do I do?