Game is amazing and interesting... But all my friends unlocked monsterwood at earlier levels... I'm in level 27 and till now I didn't get monsterwood... How to get it.... I'm confused, otherwise I need to uninstall the game... Please help me

Hi and welcome to forum :)

1-Monsterwood is mobile only feature so it will not appear if you play on Fb
2- it appear after 20 days since you start playing so probably your game is not 2 weeks old yet

:)