After adding the applink.json file in the server side, links successfully opened the app directly.
There is still issue my that app is not opening.
so find out the issue that my side SHA keys not added to applink.json. so modifiled it add again added to server that  file.
after that it is working fine.

- Restaurant App - UI Enhancements
Contact Us UI:
- Added a 'Contact Us' section to the Profile screen.
- On selecting this option, users are redirected to the relevant email application to contact support.