How to upgrade Buildings?

I see no bug here. This isn't just a building upgrade, its an epic project and you need a certain amount of epic points to be able to upgrade to an epic building, according to your screenshot you have only 3 points. 

Yes I know but i can’t restart the epic project, the timer is gone and i can’t do it again so is buged

Yes you need a minimum of 40 points to get an epic, anything less it will not upgrade