Mine too 'cause I configured it, but many (in fact most from what I could see based on helping folks with their wemos) routers do not pass multicast between bands/segments. You might double check...

Were you able to figure out if the devices connected to your wifi (the LED stops flashing)? I would think yes, as it'll see the 2.4GHz band only. But I would not be surprised if your phone or the app...

There could be a problem with the app maybe unique to your phone/os version? If you have access to another phone/tablet you might try setting it up from there. You probably know the next step is for...

An aftermarket app might help solve the reliability problems. There's a few available, you can read about mine by clicking on my profile or home page.

Not exactly a busy board :). The problem was not resolved after upgrading to the latest firmware version 1.2.3.

Model : Hardware Version : Firmware Version : ISP : Hi - I've got an aftermarket app that allows me to use my TP Link bulbs in "sleep" mode. I set the bulb to the desired brightness then I tell it to...