Hi ​@kghgk,

I’ve randomly tried to look at various places in the world and the weekly heatmap was showing pretty much everywhere (where you'd expect any activities).

Try toggling the weekly heatmap switch off and on just in case it needs a nudge to load the layer. 

You can also try zooming out and checking the nearest larger city to see if you see anything… to confirm whether the layer works for you.

After testing on other platforms. the data is present. Chrome on desktop is working, app is working but Chrome on a Chromebook is not displaying data. 

I’ll continue poking around but it is curious why there is a display anomaly across platforms.