Thank you for checking @kkossev!
Yes, humidity appears to be off by a factor of 10. I re-paired to HE and watered to verify.
I've messaged the seller - but I'm unlikely to get anywhere with it. 
Another seller named "yieryi Offical Store" (not to be confused with "yieryi Exclusive Store" that I ordered this unit from 
) is adamant that the one they sell reports 2 temps:
Will see when it arrives if it is a different model.
I'm really after a combo standalone sensor that provides soil temp instead of air temp. I'll have to experiment a bit to see if this current unit reports soil vs air temp - I tried with warm water last night but it responded very slowly.
On a positive note, the temps and humidity readings coming from it last night via Tuya integration matched the blue-wrapped soil sensor from the other thread closely. I had it stuck in opposite sides of the same pot.
Red lines: This tube sensor. Light Green line and Light Blue line: the blue wrapped sensor:
Update: yieryi Exclusive Store got back to me:
Hopefully the other seller truly has has stock of the 2 temperature model.
Update: I would not buy from either of these sellers - their units are false advertising 2 temperatures and the first seller has not been willing to refund any portion of the purchase for their error without contravening AliExpress process - i.e. they wanted me to wait out the protection period before processing a refund.
