@Klowe2112 I installed the new Velop WHW03 v1 from 1.1.10.197424 to Firmware Ver. 1.1.11.197735 Latest Date:  11/21/2019 Download 118 MB

but it did NOT fix the problem with both light switches and plugs (I have the HS210, HS105, HS200). #FAIL

Just figured i'd let people know so they don't waste their time on it.

@Mark_99 not.sure what went wrong because as soon as I installed old firmware al my problems where solved, I have 6 switches 2 HS210 and 4 HS200. be sure to turn of automatic updates before you install old firmware, good luck 

Linksys still hasn't fixed the issue. The resolution is to role back to version 1.9 (might be 1.1.9) of the firmware. There are many (unhappy) users on the Linksys forum with this same problem who have all stated that this is the fix for the tp-link connectivity issues. I can confirm this has fixed my devices too.

You have to manually downgrade but it's a pretty simple process. The Linksys forum mentioned in this thread has the details. Thanks. 

Having installed the Velop Mesh system four days ago, I, as well, am experiencing the same thing with firmware version 1.1.11.197735.  A bunch of my TP-Link switches, bulbs and mini smart plugs began random disconnecting from the Linksys routers.  I will see if I can revert to the firmware others have mentioned later this week.  SO frustrating that technology just can't work as promised.

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@Klowe2112 

Yes I'm having the same problem.