I was interested in trying this, but the UI is like pulling teeth. I couldn't accept the ToS because the checkbox was under the terms box, and had to tap very carefully.

Then I tried to create a Hub, but couldn't figure out how to get it to accept my drawing (there's no "done" button, only "cancel", even though the polygon I want is right there). After a few frustrating tries, I went back and noticed that I need to click the first point again, which is very unintuitive.

After that, it kept complaining that my area is too big, and there was no way to live-adjust the area while seeing how big it is. I had to cancel out of the whole thing, go out to the hub screen, then click "start drawing" again for another try. I didn't make it past that.