Hello,
i have the following minecraft server: http://www.gametracker.com/server_info/103.249.70.103:25565

The server is configured properly. The query.port(25566) and the connection port(25565) are open. Players can connect to server. Also i tested the query port with a php script and it worked.
In gametracker, the server becomes frequently offline. This is my first issue.
The second one is, in time when the server appear online on gametracker it doesn't show the correct number of players. Event there are connected players on server or no the status is 0/50 .

I hope you'll able yo help and solve this problem.
Thanks

Your server is not responding to the query. I've tried at a few other websites and only one was able to reach it.

Some plugins, notably MCPC+ have altered the query protocol. You may want to check the plugins you run, and try without them.

Please determine which of the following IP addresses are blocked, and I recommend whitelisting so you do not run into the same issues again:

208.167.241.190
208.167.241.185
208.167.241.186
108.61.78.147
108.61.78.148
108.61.78.149
108.61.78.150

Please report back when the server comes back online so I can confirm whether or not GT player lists are matching what is in the scan.

I've seen your server scanning now, and will make you aware that your server is reporting 3 for the current number of players, but it reports no actual players. Until your server reports the actual player list, GT will see it as zero players.

Ok..and how i can report the actual player list?

There is only one configurable option to enable querying, and you have that setup as scanning works. You'll need to determine which of your plugins are causing the issue.