I have killed the Mercenary Captain and retrieved the key to open the gate. I took off all weapons and armor and tried to go in but they immediately captured me. I tried several times without anything equipped and even banked all my items to try to get in. They still do not let me through. I've watched videos of others doing the quest and I should not be having this problem. Can anyone help? I've tried to go in with just the key so I've tried everything I can think of. Thanks!