I've had my Deco X20 connected to our three garage doors for close to three years and have been able to control/monitor them using the MyQ app without issues.  A few weeks ago, they went "offline" which means that Chamberlin could no longer see them in use.  They were/are still connected and visible on my Deco network.   I've been on the phone with their tech support for over two hours spanning three calls. Per their suggestion, I opened up port 8883 on the main Deco.  No resolution other than to say that they recommend a "regular" router vs. mesh.  When attempting to bring the door openers back online, it beeps once (router connected) then twice (internet accessed), but it never closes the loop back from Chamberlin's servers.  It finally times out.  Two questions: (1) Has anyone succesfully resolved this? (2) Can you add a "regular" router to the Deco Mesh network?   I have an old TP Archer 1900 that I could try to bolt on.   Thanks.