Dear Players, After Mozilla FireFox update to version 52 we received several complaints about Play Page doesn't work correctly (install, play and other functions). Version 52 stopped supporting npapi plugin that we used to make our page work along with WebSocket. Maybe we'll develop a separate extension to work with our page, but at te moment you can do the following: Use a different browser Download version 52 of Mozilla Firefox Extended Support Release (version with extended support), in this version the support of the plugin will be available until the beginning of the year 2018.