My scores were going up on 30 question MCQ quizes to where I was getting 70-80%s consistently and then yesterday and today they dropped to getting a 56% on almost every quiz. This is for FAR. Is something going on with the software and the questions I'm getting?
Look at what stage you are in. I can't remember what the various names are, but once you answer enough questions for the software to assess you across the entire body of knowledge, it goes into a new phase where it mostly feeds you questions from topics you struggled with during the first phase. When you finish your MCQ sessions, look at your incorrect questions and see which areas they came from in the blueprint. Focus your studying on those areas.
You don't have any subtopics that are lower than your trending score? You may have a good average on the main area (just say Area 1, conceptual framework), but low scores on certain subtopics within that main area, like 1. B. 5. Statement of Cashflows.