The problem is, your router is managing two IP addresses. An IPv4 and an IPv6.

If there is no option, to disable IPv6 in your router, you must call your ISP. Age of Empires II is a 20 year old game which does not work with an IPv6 address.

ok. i'll try. thanks

You are welcome.

i fixed it!
BUT... there are games in which i see half of the players as fp!! why?

Nothing has changed on your side, you still have an IPv6 address. This does not work, as explained in a previous post.