I have found some forum threads here that suggest the GemiBook Plus does not support USB-C charging, but I think these might be referring to older models.
For example, I found this spec sheet for an older model that specifically says it does not: Elevate Your Experience GemiBook Plus 15.6 Inch Laptop
Does the GemiBook Plus N150 model support charging through the USB-C port?
I think it might? But would like some confirmation since there is some inconsistency with the older model of a very similar name.
Thanks!