I played this game several years ago; even bought a lifetime membership, in its early days.
About 2 years later the original developing company (Junebud) sold the game to a Brazilian company.
Not long after that, although they still seem to run the run the game, the forum was terminated, and the support reduced to a finite list of questions & answers.
Then as Unity (the engine used by the game) evolved, the game files eventually stopped being compatible with the current version of Unity.
That was roughly 2 years ago; no news or update since.
I do not and will not use Facebook; I have no idea if the implementation they did on it is working or not.
What I know is that the version I paid for has not been working for several years, and I do not have any way to reach them (I found once an email address for that Brazilian company, but they never answered).
Knowledge is Power, but Ignorance is often Death