I figured out how to fix this bug, you do need to do rebel missions from the rebel mission guy in Evreux but only after completing a rebel mission that sends you to Aquila (Master-at-arms is what did it for me) then after you finish the mission switch to the queens gambit before turning in the rebel quest while still in Aquila and she is on a hill walking down (at least for me). When these rebel missions start it basically resets the area, if you notice in this area there is a titanium in the well, every time i did a rebel quest in this area it always respawned the titanium as well if you are looking to farm those.

Good luck!

@bayofangels

Update: I saw a post saying if you went a collected all the codex pages the hidden bureau guy would give you a quest to talk to Reda, this is true. Once I got this quest I was able to Talk to Reda to turn in both quests and was able to see his shop again. It took me about an hour to travel to all the locations to get the codexs but worth it IMO to have the shop working again.

I figured out how to fix this bug, you do need to do rebel missions from the rebel mission guy in Evreux but only after completing a rebel mission that sends you to Aquila (Master-at-arms is what did it for me) then after you finish the mission switch to the queens gambit before turning in the rebel quest while still in Aquila and she is on a hill walking down (at least for me). When these rebel missions start it basically resets the area, if you notice in this area there is a titanium in the well, every time i did a rebel quest in this area it always respawned the titanium as well if you are looking to farm those.

Good luck!

@bayofangels

Update: I saw a post saying if you went a collected all the codex pages the hidden bureau guy would give you a quest to talk to Reda, this is true. Once I got this quest I was able to Talk to Reda to turn in both quests and was able to see his shop again. It took me about an hour to travel to all the locations to get the codexs but worth it IMO to have the shop working again.

Update: I saw a post saying if you went a collected all the codex pages the hidden bureau guy would give you a quest to talk to Reda, this is true. Once I got this quest I was able to Talk to Reda to turn in both quests and was able to see his shop again. It took me about an hour to travel to all the locations to get the codexs but worth it IMO to have the shop working again.

I am unable to interact with Reda. I was able to talk to him and he gave me quests and once I completed those quests I also finished "Viking for Hire" and it told me I needed to speak to Reda but he is unable to be interacted with. I am also not able to view his items anymore as well.