[AndreT]

Instead of simply feeding the guy a working piece of code and waiting until he returns with a similar problem, why not explain what the issues are about in the first place?

About warning 217: click and READ it
About warning 209: the code that would cause such warning is:

pawn Код:

public OnPlayerConnect(playerid)
{
    if(something == true)
    {
        return false;
    }
    // continue code here
}

To fix it, you need to add a return...

pawn Код:

public OnPlayerConnect(playerid)
{
    if(something == true)
    {
        return false;
    }
    // continue code here
    return true;
}