Right now, I'm upgrading my 2 gold mines and 1 elixr collector to lv 11 right now and i have to wait 3 days more. So, the gem boost thing is available until August 7th. Right?
1. Then if i use boost right now, can i boost again in August 7th?
2. Also, should i cancel upgrading gold mines and collector?
3. If i boost my gold mines after 3days later, when does the boost ends?

