I started playing again and when I linked my facebbok account both buildings and rocks and trees doubled, I spent more space and time cleaning the island

Hi and welcome to forum

Sadly this is wide spread bug and sp aware of it . you will need to send a support ticket to sp about it . this is how
https://forums.socialpointgames.com/topic/30/how-to-report-game-problems-to-support

Thank you