[iggy1]

It doesn't disappear because you show it again in that func.

pawn Код:

stock InfoBoxForPlayer(playerid, text[])
{
    TextDrawHideForPlayer(playerid, InfoBox[playerid]);
//  TextDrawDestroy(InfoBox[playerid]);
    new string[800];
    //ViewingBox[playerid] = 1;
    format(string, sizeof(string), "%s", text);
    TextDrawSetString(InfoBox[playerid], string);
    TextDrawShowForPlayer(playerid, InfoBox[playerid]);//showing it again
}

Ignore this^^ got wrong end of the stick.

I can't see you destroying/hiding the etxtdraw anywhere in the code you posted apart from that function.