I really feel for you - I have had the same issues with tasks and unfair / deceptive business practices
I voiced my comments to CF several times and nothing is being done, it is really up to the task owners which are regular people like you and me, nothing much CF can do about it, the only thing you CAN do is do your best and move on to the next task, if you get flagged for a task, it will be only for the duration of the task. Once it is completed, removed and resets and appears again you will be able to do it again......... Keep sending feedback, if everyone complains, it might have some effect, don't let being flagged deter you from doing tasks, I've made $6 in 2 days and right now going for another $3 today, even though I got flagged from tasks before, unfairly....... It sucks but what can you do, CrowdFlower puts the blame on Task Owners, task owners puts the blame on script glitches, everyone blames one another, lol.........it really sucks for people like us doing the task, but luckily there are some good tasks to do. In my opinion I do think BOTH parties are to blame, both CrowdFlower AND the task owners, as I do think the interface / script is glitchy and it might not be the task owners' entire fault !