A sandy scandal wont work

i recently came back to wynncraft and i am partway through a sandy scandal, the stage is "dont let the bandits escape" and i think thats where the fight with the tnt happens? i cant get in for some reason and im looking for support on how i can complete this.

 

Are you sure you were entering through the last entrance you went in to? I presume it's the one across the moat of water with fire inside of the hole?