Hey there! I know it can be tricky at first, but I'm here to help. Here's a quick and easy way to do it:

1. Open the home page of the app.

2. Click the "Messages" icon button in the upper right corner.

3. Click the "Alerts" icon button.

4. Click the upper right corner of the "Select" icon button.

5. Click "Select All," and then click the "Delete" button below to delete.

I know it can be overwhelming at first, but I'm here to help! If you need any more help, just let me know. I'm always happy to help!