M9 Plus has a known issue with disconnects! TP-Link is aware of this yet have not fixed the issue yet and it appears they never will!

I have a 3 pack - the primary unit drops internet connection several times per day - obviously once that unit drops the others do as well!

I have fiber internet out of the wall directly into the primary unit. The other hubs are located through the house.   there is nothing wrong with the internet, when using a netgear ac1750 the internet / wifi NEVER drops!   Since I know for certain the internet connection is not th eissue it is 100% an issue with the Deco M9 Plus!

@tykra 

I had same issue and contacted TP-link. They told me to swap unit...

So I was only using 2 at the time...so they wanted me to make the satelite the main and the main the satelite.

I kept asking that since the units are identical until setup...how would this fix anything.

They would not tell me anything except that this sometimes fixes things. 

I did swap them and it is a litlte better (??) but I still experience issues.

I am not happy about spending the money on this and having these issues. I bought at Costco and may just return them unless things get better. I really do hope they get better.