The problem I come across over and over again is that POF is filled with bots and scams, even though it may have the most users of any dating app.
The app serves a valuable purpose, but generally has some bugs and glitches that made it frustrating for me to use.
Your job title and the college you attended are factors The League considers when you apply, which is why you have to provide your Linkedin account.
The League is an "elite dating app" that requires you to apply to get access.