I can't get the zombie horse cape even I did the quest/task/challenge plissssss mojang gip me the cape
Comments 2
You should receive the cape approximately 30 days after the promotion end date. See https://help.minecraft.net/hc/en-us/articles/41416317734797 for more information.
If after 30 days you do not receive the cape, contact Mojang Support.
Now, I’m no mod, but you get the cape after 3 days. To show proof if you still don't get the cape record yourself killing 5 mobs with the spear