I downloaded a valid submission from my submission page and re-submitted that again. Now that same valid submission which had previously gotten a score(~5411) is now invalid due to (infeasible strataegy). Has there been some scoring changes or test dates moved?. I scoured the discussion forum but did not find any recent mentions. my initial submission was 16 days ago so some settings could have changed?

Thanks

update: I worked it out by doing more re-submissions. Previous solar profile had changed a little i think.