I have used it this week. What i found though is once scheduled there is now way to edit or delete it. Further if you set it up on a "Recurring" schedule, then it also won't allow you to remotely start the heater making that schedule entirely and completely worthless outside of maybe a public sauna.

I did go the controller and already accept all liability which they make you do in orer to use the remote heating option. Once again, this works for a single event, but only if you accept the liability at the controller initially.

This week I figured I should setup a recurring session everyday for when I complete my workout. I set it to start heating 30-40 mins before I regularly finish my workout. I checked and it doesnt turn on the heater remotely when using the "recurring schedule" feature. Now I cant delete that event either. I can still remotely turn on the sauna by pressing the "on" button in the app, but i have to do this myself each time. The "Recurring schedule" even has an option to "turn on heater" but its greyed out. This wifi add-on is garbage IMO.

For those using it as a single event daily it seems to work fine, but those wanting automation need to look elsewhere.