Because they keep on deleting my questions and answers.

keep trying as they delete mainly the question which are unapproachable and if they are deleting means your questions wouldn't be appropriate or there would be any problem with the app just for some little thing don't delete the app I know it's sometime frustrating but keep trying I thing your question wouldn't be deleting further as these questions aren't been deleted so it can be that your other question wouldn't be deleted

so you shouldn't be deleting this app and I hope you'll not delete it and if it still deleting that it's your choice but for the while don't delete the app