Cant boost my towers anymore

Hello i think my map is Bugged, i finished 2 towers with tier 15 maps full upgraded ( to get the 3 slots of boost on the towers ) my towers are well completed but i cant use Books to boost the nodes they are still chain locked even if well completed when i put a New map in the 3 slots appear unlocked but if not able to launche the towers anymore i get an error message : map all ready consummed.

I think i forget to put down 3 others boost book when i completed a normal node and i cant access to the node anymore to put them away.

I need some help please i cant boost my nodes anymore !!

Oh thanks you so much its why