If anything, Snapchat will automatically remove any third-party apps from your account if you don’t use them for a full 90 days.

If you’re OK with that information, tap the “Continue” button. From there, you will see a white box with the words “ask me anything” inside. You can change this text to anything you’d like by tapping the “edit” button under it. There are different fonts, backgrounds, and a randomization option you can use.

Source: https://www.distractify.com/p/how-to-do-anonymous-questions-on-snapchat