When I synchronise Wordr with Wordfeud the blank letters (period .) are not synchronised.
So the possible words are correct but not al possible words are shown.
I thought this would have been resolved with the latest version released yesterday, however it seems this was not the case. I will release a new version this weekend which will resolve this.
The problem is that Wordfeud does not show the rack of letters in the list of games... so you need to load the game first to get the list of letters in the rack. I also dont want to load each game in a loop only for the letters as this can get you banned from Wordfeud as you are hitting their servers with unnecessary hits.