Hello CODM,
If you're trying to change the profile picture within the game settings for this app, you'll need to reach out to the app developer for additional help:
To contact the developer:
- "Open the App Store on your iPhone, iPad, or iPod touch.
- Search for the app, then tap it. If you can't find it, tap the account button
or your photo at the top of the screen, tap Purchased, tap "Not on this [device]," then tap the app. - The app's product page appears. Scroll to the Ratings & Reviews section, then tap App Support. If you don't see App Support, make sure that you're signed in with the correct Apple ID."
How to contact an app developer
All the best.