i joined my client and i pressed a button dont know which one and now my screen is like classic rotmg on site, please how i can change that and have again a big screen and good view.
try using /fs command it will enable full screen back. by the way check if you've enabled screenshot mode (should be in options - Other)
Screenshot mode is usually activated with Backspace
Most likely you pressed backspace which activates screenshot mode. This will hide hacks therefore your visual will be of a clean client, press backspace to reverse it.
If you have fullscreen issues /fs should solve it, or /mscale 0.7