After the server changes, there was an update to the dictionaries that caused a problem for some levels. Some of the levels are generating long words that appear to be two shorter words joined together. This is a result of there being an error in the dictionary. This has been fixed for both the common words and ospd dictionaries. Please do the following to update your dictionaries (if not prompted by the game to do so):
From the main Word Mix screen, press your devices Menu button. Tap "Settings". Tap "Dictionaries". If "common" is currently selected, choose "ospd". If "ospd" is selected, choose "common". Press your devices "back" button until you get back to the main Word Mix screen. At this point, you should see a message stating that it is loading the dictionary you chose (If not, try the above steps again). Please try to keep your device active while the dictionary is loading to ensure it gets loaded completely. Also, you will need a connection to the internet while it is doing this.
Sorry for any inconveniences this may have caused.