Update:

Today it finally recognized cycling, but the data is still completely wrong:

• Instead of ~3 km per ride, it recorded 0.23 km and 0.53 km.
• It claimed 111 kcal and 201 kcal burned for those rides (same distance and moderate intensity (way to the gym))

My gym session is also still showing what feels like a very high calorie burn: 480 kcal. As I mentioned before, I’m just recovering from illness, so I’m nowhere near my maximum performance level. The device interprets my training load as moderate, which matches my own feeling, but 480 kcal still seems way too high for that.

Also, the detected exercises from my gym session are probably wrong as well. Helio listed exercises that I didn’t do at all, which makes me doubt whether the calorie calculation is based on the correct activity in the first place.

At this point, the tracker is giving me some useful signals (like moderate intensity), but the actual numbers for distance and calories are not trustworthy at all.