Your character is not broken. You have encountered non working content. Some non working content is introduced with every game update by Turbine - either existing content that is made non functional, new content that does not work or content that only works if you do it the one acceptable way.
You have to wait the 1-12 months it takes for Turbine to fix it. Hopefully there will be a fix for the content that Update 11.1 disabled when Update 11.2 launches later on in July.
In the past it has taken Turbine a very long time to fix content interaction issues. I believe it took 9 months to resolve some of the issues with linked quests in the Rise of Isengard expansion. I do not think Turbine ever resolved all of them. Some of them had to be done in the right order because you would be locked out of the quest(s) if you advanced the NPC state causing the NPC to phase - disappear or move.
This situation results in players having to access online spoiler to make sure they do not fall down a rabbit hole.
Unless stated otherwise, all content in this post is My Personal Opinion.