Can't get the elixir store to sell me anything

the register doesn't seem to do anything. and the only option is to click the clerk and use buy items but he just shakes his head and tells me no. I even tried making friends with him but even that seems not have worked.

removed lot and replaced it. - hasn't worked

messed with the register - hasn't worked

Not being able to use the store has really made it hard for me to enjoy this expansion because it plays a big role.

Going to make a separate save slot and see if that wields any results