problem with all trackers
 

hello
i have a problem with announce url
this is the announce url http://download.co:2710/announce
but when i add him to the trackers in torrent create he dont work
connection error

what i need to do open to port or somthing else?

first you need to be more direct on what source your talking about.
second you need to make sure that port is open and directed properly
third you need to make sure you have you redirected announce to announce.php by ether .htaccess or threw Apache Aliases and Redirects

i use VBTT
and i search in folder i dont see announce.php file what i need to do?

I don't know much about VBtt But
If you search and don't find announce or announce.php that is a Big problem!
with out one or the other your tracker well never work.
If you find announce then you don't need to worry about redirect.
Just take care of your Port also you well need to let apache know you are using that port.

:2710/announce = XBT backend announce. You can only use this kind of announce if you actually have the XBT Backend installed. For this you typically need a Linux based VPS/Dedi. (Although You can also get an old pre-compiled XBT Windows Binary here (Nearly 3 years old)).

sorry that my first time i use this source
i dont understand what i need to do with that XBT?

i dont have that file announce.php

Try reading this for more information about XBT.