The multiplier you are referring to: are you talking about the Blessing Upgrade "Holy Wood" which multiplies levels gained?
If yes, I'm not sure what causes it not to work, but I'll look into it :)
No. For example, Meowruto has the Training Hall. The info listed is
Name (Training Hall) Level
Gifts needed x1 mysterious yet pointless multiplier
levels / min
The x1 stands for the amount of levels you want to buy, just like when buying cat levels.
I will add the option to buy more levels for buildings with one click in the future.