Problem is:

Online Clients (IoT and Main) few in number, sometimes as low as Zero, the rest reporting in the Offline Clients List. Rebooting resets the issue but again, eventually, all clients will end up on the Offline Clients List.

Not sure why this problem has begun, but it has to be in the recent X55 Firmware somewhere as this is a recent development. I've owned X55 for a year without these issues.

It only happens when X55 is set as Main Deco.

I have tested using X55 as Main Deco with M5 satellites (3 of each). Problem is apparent.

Setting M5 as Main Deco the problem disappears.

In case the M5 was the issue, I bought 2 x new X60 (yes, I'm a glutton for punishment)

Leaving X55 as Main Deco, the problem still exists.

Moving an X60 to Main Deco, the problem disappears (as does all the tricksy stuff introduced with the recent X55 Firmaware update).

With the X55 as Main Deco; I tried-

rebooting the network (several times);

restarting the whole network (cause heaps of problems and literally days of resetting everything);

changing the X55 Main Deco for another one (eventually trying all three)

None of this worked.

There is no need to respond, this post is for information only, in case others are having the same issue with the X55. Maybe if you are, just drop a message below.

My guess, its this new Client Recognition thing. It probably gets confused when products have had a previous manual name change or something.