Answer: It is likely that this can happen.
Explanation:
If you really want to go the extra mile to clear it all, I may recommend that you clear it off the phone as well. Hope this helps.
Answer:
Nope, you don't have to pay
Explanation:
All you have to do is create an account. You can have a free account, or you can pay for one, but if you have a free account you can only see so many answers. Then you have to watch an ad to see them. With a paid account you can get all answers without having to watch any ads.