Hi everyone! Thank you very much for the answers!
It seems I managed it. I messed up, indeed 0.5g of powder was added instead of 0.3g, but it measured it erratically. I fiddled with it, tweaked it, took it out-put it back in, wiped it again, and also changed the battery, now it shows exactly 0.5g.
On the other hand, the base liquid turned out a bit weak, I must have miscalculated something with the flavor, or it’s just this light by design, but it needed a lot more flavor. Yet its scent was very potent, oh well, learned from this too!
I still need to get used to this, it’s not a simple 510 tank that you just screw in and vape (at least for me)! 
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