yes i tested it.
i could not join the 0ad game but it didnt give any error. it seems it keep connecting to the lobby but never get in it.
also i could not join other game already ( battle for wesnoth) but with my phone net i could join it!
so it means something is wrong with my modem?
its a old modem, the model is irancell mobil boardband e3372 LTE usb stick.
should i but new modem ? or i just need to do something with this one?