Apple jelly didn't set up.

Well I do know that you could use the apple syrup to put on any pork dish that you have, but otherwise if you do not eat pork then you could recook it and add some more pectin.

so sorry to hear that i really dont know what you can do but here is a recipe for you follow this I like jelly better than jams, I think it's the way they look, all clear and sparkly 4 cups apple juice 1 (1 3/4 ounce) package dry pectin 5 cups sugar Combine all juice and pectin in a large Dutch oven;bring to a boil, stirring occasionally. Add sugar, and bring mixture to a full, rolling boil. Boil 1 minute, strring constyantly. Remove from heat, and skim off foam with a metal spoon. Quickly pour hot jelly into hot sterilized jars leaving 1/2 inch headspace;wipe jar rims. Cover at once with lids and screw on bands. Process in boiling water bath 5 minutes