Doesn't work. Can't send or receive texts.

This is a great app and I gave it 5 stars. However, there are a few things lacking in it, such as an icon in the address bar, a simple UI similar to that of Pushbullet (a small window that pops up upon clicking the icon), availability of other languages (not everybody understands English these days). Oh, and one more thing - after re-installing Easyjoin I'm not seeing its icon in the right-click menu of my browser :( I'm on Mozilla ESR 52.9.0 x64. Please, advise.