trial of Sekhemas Coin

hi ther i am now lv 40 want to do my trial of sekhemas i kill bajan at lv 20 but i diten loot the green coine ..
when on whit th quest and now at lv 40 i want to go back and do the trials but i cant teleport to ther nor can i use the desert device to get ther its dont show on the map when i try get ppl to go ther to teleport it say i dont have the right quest to go ther so im stuck how do i get to trial of sekheman coz bajan dont drop a new coin so now i cant complet the quest travle to traitrs passage

anyone know of a fix coz i cant seem to find any sollution to this