I mean, regardless of printer make, they all work the same way. I can't find that model number on google? I'm assuming it's a basic R2R small solvent unit.
There's obviously still ink all over the head after it wipes. Check the wiper, it could also be the capping station or clogs on the pump side so it's not getting proper vacuum. In that case, you'll have to heavily clean out the capping station and lines from the caps to the pumps to the waste tank. The "splurging ink" issue is usually never indicative of a head/damper/line issue before the heads.
Not being snarky, but do you know much about printers? This is a pretty normal issue, but if this isn't your normal wheelhouse then you definitely need to buy a unit that comes with a warranty or purchase a support plan. Once you get experience dealing with these types of problems then you can easily survive the world of discount machines, used units, and contract-free operations.
Lastly ... none of us buy Chinese printers for a reason. Their machines are terrible and their inks are the absolute worst. You're walking into a world of headaches with that machine and your customers' prints are going to die in 1/3rd the time.