Anagrams not accepting 6 letter words

I have been playing Anagrams for current weekly Badge where we are to spell 40 six letter words. I've reached 19 but for the last two days, when six letter words are available, six letter words won't be accepted. I do know some aren't accepted but the last couple of days it seems none that are played are being accepted. Now I'm running out of time on the Badge. Seriously? What's the secret?

Belle @ [edit: email address removed]

Thanks