appen qualification

hi all,

I registered and applied all the projects available and waiting to hear back. When I check the internet and this subreddit, I saw that most of the people got invited to projects. That is not the case for me yet, I know that one of my friends waited more than one year to get an invitation (I'm not from the US). I'm currently waiting to hear back from the projects. How long does it usually take?

Thanks in advance