on iOS:
- Within the Gather app, tap your Photo icon on the far right of the navigation bar
- Tap the Pencil icon to open the profile editor
- Tap Age
- Select your date of birth (Note: This can only be changed once)
on Android:
- Within the Hinge app, tap your Photo icon on the far right of the navigation bar
- Tap the Pencil icon to open the profile editor
- Tap Age
- Select your date of birth
- Tap the back symbol when you're happy with the changes (Note: This can only be changed once)