Did you use a wing joiner? I tried to re-epoxy a together that had broken in half and it failed on the first flight because I didn't think the wing joiner would be that big of a deal and I didn't cut it out ot replace it or use another. Lesson learned on my part.
Here is a pic of my wing after the second failure. I Have cut the wing joiner out now as I intend to fix it again. On mine the epoxy joint held firm it just ripped the wing rib out of the wing.