What am I doing wrong?

Hi everyone,

The label is saying that this plant is a "Portulaca" without specifying.

But the label also says to put the plant in partial shading with a humid soil. Another red flag compared to the Portulaca Umbraticola is that the label says it's highly toxic to humans when I found online that it's not.

Finally, I first tried putting it on a full sunlight balcony (bright hot sun from 10am to 9pm). It become red/yellow but bloomed, now it's on a partially shaded balcony (light sun from 7am to 10pm) and it's still loosing its leaves, even more, the color is worsening as you can see.

That's why I tried online identifiers and they all told me Portulaca umbraticola and that the needs were not the one I had on the label... I might be overwatering then (once every two days).

Should I trust the label and let it there and continue watering? Or shouldn't I trust the label?