We understand that it's game-breaking if you're having trouble playing the daily challenge.
Please know that this is a known issue and we are still looking into it. With that, we won't be able to provide a timeframe for the fix.
We want nothing more than for you to enjoy the game which is very important to us. Rest assured that we are doing our best to get the daily challenge to work properly again.
We hope for your understanding and continued support to Wordalot.