Hi!
Sorry for the troubles getting WLED to work nicely 
I believe this is the still the same problem you were dealing with in your earlier post…
The HomeAssistant integration just sends standard JSON API commands - you should run into the same issue if you send changes to colors/effects from the web UI.
You could give this usermod a try, maybe it helps. Not sure if I asked already, but what is the router/accesspoint you are using? 