Hello   @BremdanJohnso 

If Tapo smart device failed to connect to Mesh Wifi network, you could try some tips here 

1.  For dual-band or Mesh router, use a different SSID (Wi-Fi name) for the 5Ghz band from 2.4Ghz or temporarily turn off the 5Ghz band.

Or try moving the router or smart device far away from each other to make sure the smart device connects to a 2.4Ghz wifi network. This is because 2.4Ghz wifi typically has a better Wifi range than 5Ghz

2. You could also  temporarily turn off the Mesh option for smart device to help isolate the issue. 

Though smart plug does not have Wifi roaming,  it should be able to switch to a Wifi that share the same SSID and password after Wi-Fi interruption of current Wi-Fi network.