@mu, Easy. The issue is syntax related.

Your script has a lot of issues with syntax, like missing ends, and newPlayer is a userdata.

Also, remember to run this server sided, with a regular script.

Fixed, and cleaned up(and I removed the earlier bug):

local PassRank={};

local setHealth=function(Character)--// Example Function
    coroutine.resume(coroutine.create(function()
        if(not Character)then
            repeat wait() until Player.Character;
        end;
        local Humanoid=Character:waitForChild'Humanoid';
        Humanoid.MaxHealth=500;
        wait( 1/4 );
        Humanoid.Health=500;
    end));
end;

function assertPlayer(Player)
    if(PassRank[Player.Name].VIP)then
        --// Award player with VIP items
        --// Example:
        Player.CharacterAdded:connect(setHealth);
        setHealth(Player.Character);
    end;

    if(PassRank[Player.Name].Tester)then
        --// Give the player testing powers
        --// Example:
        Player.Chatted:connect(function(Message)
            if(Message:match'/test$')then
                local Hint=Instance.new('Hint',Player:waitForChild'PlayerGui');
                Hint.Name='TestingHint';
                Hint.Text='Testing';
                for Increment=1,10 do
                    Hint.Text=Hint.Text .. '.';
                    wait(1);
                end;
                Hint.Text='Test complete.';
            end;
        end);
    end;
    if(not next(PassRank[Player.Name]))then
        --// The player is a regular person, do some stuff
        --// Example:
        advertisePurchase(Player);--// A function to try and convince them to buy VIP.
    end;
end;

function onPlayerEntered(newPlayer)
    local GamePass=Game:service'GamePassService';
    local ID1=222805421
    local ID2=222807114
    local function printf(String,...)
        print(string.format(String,...));
    end;
    local Passes={
        Tester=GamePass:PlayerHasPass(newPlayer,ID1) and true;
        VIP=GamePass:PlayerHasPass(newPlayer,ID2) and true;
    };

    if(next(Passes))then--// If player has any pass.
        for Pass in next,Passes do
            printf('Player %s has the %q pass.',
                newPlayer.Name,
                Pass
            );
        end;
    else
        printf('Player %s is a visitor.',newPlayer.Name);
    end
    PassRank[newPlayer.Name]=Passes;
    assertPlayer(newPlayer);
end;

Game:service'Players'.PlayerAdded:connect(onPlayerEntered)

Just by looking at the structure of the script, I knew that there must be a logic error in here, assuming that you intend to have this script as a way to indicate what pass they bought.

Notice how these "if" statements are nested.

If a player has IDtwo, but doesn't have IDone, then line 7 will not execute, because the first tier of "if" statement is not true!

Therefore, your script will skip the whole chunk of code.

function onPlayerEntered(newPlayer)
    local IDone=222805421
    local IDtwo=222807114
    if game:GetService("GamePassService"):PlayerHasPass(newPlayer,IDone)then
        print (newPlayer.."has testing permission")
        if game:GetService("GamePassService"):PlayerHasPass(newPlayer,IDtwo)then
            print (newPlayer.."has V.I.P.")
            if not game:GetService("GamePassService"):PlayerHasPass(newPlayer,IDtwo) and not game:GetService("GamePassService"):PlayerHasPass(newPlayer,IDone) then
                print (newPlayer.."is a visitor")
            end
        end
    end
end

game.Players.ChildAdded:connect(onPlayerEntered)

Rather than nest them together, try and put them together with "elseif" statements, or just separate the "if" statements altogether. Let's compare the two methods:

Figure A:

elseif Method

if [condition] then

elseif [condition] then

else [condition] then

end

Figure B:

Separation Method

if [condition] then

end

if [condition] then

end

Figure A: This is good for levels of permission. The script will go through the series of elseif statements until it is true. If not, the if statement altogether will be skipped.

Figure B: This is good to just let them have whatever they bought (no levels of permission).

There are two objects: 1 and 2.

Person 1 bought object 1

Person 2 bought object 2

Person 3 bought object 1 & 2

NOTE: THIS WILL ONLY FIX YOUR STRUCTURE PROBLEM.