Class of 21st Century

Hello,

I have downloaded this game but there are very serious issues occurred.

After downloading the game, it asks for sign up so it has an option to sign up with Facebook & Google accounts but it’s not working and this disappointed me a lot.

Secondly when I tried to do normal sign up by putting self information then also it asks activation code so activation code is not provided here or not provided any provision to activate activation code. This is fullish as you will not be able to reach first level of this game.

I think developer need to note it as
There are these kind of bugs occurred and need to be corrected immediately. Else it will be problematic.

Thank you..