With help from the TP-Link engineering support team, I was able to install firmware updates on my KH100 and KE100 and now everything is fully functional again. Please refer to this thread if you have...

I also noticed a similar problem by another user with a different model of Tapo hub (H100): https://community.tp-link.com/en/smart-home/forum/topic/651756 Could this be a related problem?

Sorry, I could not attach the ping log file. Here is an excerpt: PING 192.168.178.48 (192.168.178.48) 56(84) bytes of data. From 192.168.178.26 icmp_seq=9 Destination Host Unreachable From...

The KH100 hub is no longer working properly for me, as well as the connected thermostats. This is due to network connectivity problems which are as follows: - hub will be online for ca. 30 seconds...