Quick update guys. If you are using more than one scene in your word game, you are going to run into a serious game breaking issue. Upon loading a second puzzle scene, you'll notice the following error message in your console;
"MissingReferenceException: The object of type 'Transform' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object."
You'll then notice that all of your HOTweens are broken. It appears that HOTweens stay in memory when changing scenes, and this can cause all sorts of problems.
Luckily, there is an extremely simple fix for anyone who experiences this. Simply use a "Hotween Kill" action before each load level action.