Wfs 210, this product is same has send money to garbage, very disappointing

Hello, very disappointed with this product, already disappointed with lack of documentation and support before, think im done with Velleman,
Bought this one after a bought a dsu9 and a lab2 3in one for my teaching lab,

I only managed to conect my wfs210 2 times by wifi in my computer, in a tablet or phone is useless, by usb only conects for moments, theres no patch, theres no new firmware, theres no answer on other clients same issues, so how can we trust any product of this company?