Samsung PowerBot r7040 WiFi Connection Issues

I have a Samsung PowerBot r7040 smart vacuum that connects to my SmartThings through my home WiFi.

However, every time that my internet ever goes offline (such as when I update my internet firmware), the PowerBot is the ONLY device out of dozens of IoT devices that can never automatically reconnect to the WiFi when it comes back online.

I have an enterprise-level internet setup at my home (UniFi Network by Ubiquiti). This supports the required 2.4 gHz WiFi that the PowerBot requires.

Has anyone experienced similar PowerBot issues? Any suggestions?