Just to be sure you did make it on the character that has the quest? Most crafting quests require the name of the user on the item in question, so if you made it with another character or got it from someone else it won't count. If the quest acquired by Bobby Joe then the item must be crafted by Bobby Joe.
Alternatively you can abandon the quest, extract glyphs found in the wild until your enchanting is up to 10, talk to the certifier again, you get an option to skip the crafting portion and be certified.
I had this problem the first time I did the certification quest and it turned out that I wasn't very good at following instructions. I had made the wrong glyph. I somehow missed that we had to craft a specific glyph for him and just crafted the one I had the most mats to waste on.