As discussed in this threat here,
forum.fenoxo.com
Several people, myself included, are unable to retrieve their weapons from the front desk during TessaQuest even after obtaining the weapons pass. It is impossible to continue further unless remaining unarmed.
Running into trouble with Tessa's dungeon
After acquiring the upstairs weapon pass, I tried to retrieve my weapons from the desk, but after picking up my weapons, the door remains locked, preventing me from going any further with my weapons. Am I missing something?

Several people, myself included, are unable to retrieve their weapons from the front desk during TessaQuest even after obtaining the weapons pass. It is impossible to continue further unless remaining unarmed.