It was a bad plot combined with bad storytelling. The story itself wasn’t very well though out or properly planned, which resulted in it being fairly confusing and leaving quite a bit of loose ends, as well as some very obvious railroading. Furthermore, the DM played very loose with rules, often calling for completely nonsensical dice rolls and overall just making it seem like she had a subpar grasp of the game rules, or just didn’t care about them.

This was further compounded by the show being advertized as this big amazing thing, with a lot of praise being thrown towards the DM’s supposed game skills and storytelling ability, which definitely didn’t live up to the hype.