How to install MMod 1.1 Work With Lastest Version 1.3 Read "HOW TO INSTALL.txt" first
У вашего броузера проблема в совместимости с HTML5
So the last tutorial i taught you replace whole files, so this new way will easy for you.
https://www.moddb.com/mods/hl2-ep2-enhased-mod/downloads/half-life-2-mmod-version-11