TFT ITEM DISAPPEAR

FOR SOME REASON WHEN I SOLD MY AHRI WITH THE "DEMON" ITEM ON HER , THE ITEM DISAPPEARED. I HAD ONLY 2 ITEMS ON BENCH AND I COULD NOT FIND IT ANYWHERE. NOT WEAR IT ON MY OTHER CHAMPS ON BENCH ETC. RITO PLS DO SOMETHING ABOUT STUFF LIKE THAT. I LOST THE FIRST PLACE FOR THIS AND IM SURE ITS GONNA HAPPEN AGAIN!