i got alot of lvl 2 tier mats
How do i upgrade those or make stuff

You might as well wait to craft mats up, they drop the high end ones later and it is a waste of credits

But if you really need the mats, you use the crafter to upgrade them, but you need to level your crafter first by donating items to him

ahh so dats what donating is for
tymen i donated some earlier hoping it would lvl up

It is best to just donate all greens+ that you don't need

you donate to lvl you vender and u can use lower lvl mats to make consumables that increase you dmg,spirt,move speed etc.. once you get some lvls on him but really i dnt think they are worth it but some ppl might like to little boost they give thats the only thing i found low lvl mats useful for so far