Answer:
First off plz don't cancel the site this has helped me a lot, and second the unfair deletion of accounts has been seen a lot on brainly. I've seen it for three straight days, but it seems brainly doesn't notice or care this has been happening.
Explanation:
Causes for deletion of questions
* telling you to have a good day
* inappropriate questions
* Asking for gf or bf
* etc that I have yet to find out