How do I edit my app name and app purpose?

You can edit the following in SDP: 

1. General information
   1. App Name (subject to approval)
   2. Description
   3. Contact emails
2. Configuration
   1. Site URL
   2. Redirect URL
   3. JWKS endpoint/object
   4. Mobile app launch URL 

3. Data Scopes (subject to approval)

   > Detailed guide here

4. App Purpose (subject to approval) 

For more help, you may refer to the guides here: 

1. Editing/updating the fields for your staging app

2. Editing/updating the fields for your production app