HK-55 not disponible

Hello,

I purchased the HK-55 expansion and have already completed the mission on one of my characters. However, when I try to access it on another character, it is not available, even though I meet all the requirements.

I do have access to The Shroud of Memory and have completed it successfully.

I have looked up this issue online and found references to a possible bug. I was therefore wondering if this could be my case, and if so, how it can be fixed, especially since it is not possible to contact customer support without an active subscription...

Thank you for your time.