@Fae Thank you for acknowledging an issue exists and where the root cause lies. I'll look forward to testing the fix and reporting back on my findings as soon as it is available.

The IP address outside the DHCP range was a suggested work around which is now outdated as the DHCP reservation functionality is officially supported in the most recent versions of the controller....

@TandS Here is just one example.. (You can also see from the pics above that DIN - Light has a different IP address :192.168.50.72 from what is showing in the DHCP reservation screen : 192.168.50.14).

Using the following equipment : DHCP Reservation Functionality STILL DOES NOT WORK RELIABLY using TPLINK HSxxx IOT light switches and plugs (and likely others). This issue has been raised many times...

@btx Unfortunately this is nothing new and I have been posting about reserved IP addresses not working for quite sometime : Here is my latest post....

@TandS I wonder why doesn't TPLINK respond or at least acknowledge an issue with static IP addressing not working. There are plenty of threads on this forum with people reporting issues yet nothing...