TP-Link Deco (in my case M5)

Other than the Main unit, my other Deco units continuously go offline for about a minute and then recover (woth either wireless or ethernet back haul). I have reset the units and tried many different configurations but nothin worked.

Today I diconnected my Fing box from the network and the disconnects have been repaired. I'll keep monitoring but it appears as if the Fingbox was the culprit that interfrred with my network

Is there a setting I should use (either on Deco or Fing) so that I can reconnect my Fingbox (V1) to the network?