The guy did give you the mats.

Equip your leatherworking tool. Open your Main Menu. Go to "Synthesize." Click on "Requested Items." Select the leve. The materials will auto-fill, and the rest should be self-explanatory.
Someone hinted recipies are not listed but then how am i supposed to know what to make and the client crashes on alt tabs.
That's something they're apparently working on (or going to work on). For now, you can play in Windowed mode. Then you can check recipes on YG while you're playing the game.