@AndrewG38 i see the same. Sometimes, clearing the cache used to work. Sometimes it shows 85 clients and sometimes it shows 29. The app may show different result on another android tablet. I tried on Samsung galaxy ultra 22 and now 24 and galaxy tab s8 ultra both running android 14.

AndrewG38 wrote

Before a recent update, the Deco app used to regularly list all or nearly all of my wifi devices both from the main and IoT network, usually about 25 devices. Now only about 12 are listed, however strangely it is clear (for example, from automation or third party app access) that these devices are online and working. An example: some Tapo L535 bulbs show as connected, but others do not, and all are working as expected. 

I was going to post something similar (maybe even the same issue).  

After the latest Deco mobile app update, if my phone is on cellular data,  the app will display a prompt saying my device is offline and that it cannot connect to Decos, in addition to showing Decos as offline.  

Obviously the phone has data/internet connection and the Decos are all verified to be online and working.  After some time the app will detect my phone's cellular connection and display that it is connected along with current network information.  

It seems to be very delayed in seeing/using the phone's cellular connection.  There is no issue if the phone is on Wi-Fi, the app connects fine. 

Phone is Samsung Galaxy S24+ (Android OS version 14) Cell service provider is AT&T.  Not sure if iOS devices see the same issue.