Meta Setup for App Installs

I have both an iOS and an Android build ready to promote and an active Meta Ads account already in place. What I still need is the back-end connection that lets me choose “App Install” as the objective inside Ads Manager without any warning banners or tracking issues... (Budget: $30 - $250 USD, Jobs: Android, App Development, Facebook Ads, Google Ads, iOS Development, iPhone, Mobile App Development, PHP)