At 63 words this is way too long for a logline.
Whilst there are all the elements here it could easily be trimmed down to fit within the 35 word recommendation.
It doesn't really work for me though. What's in it for the brother? He must be on board! Surely somebody would notice... the wife probably?
Why not make him an identity thief and he figures out a way to send his twin brother away for a month and all he wants to do is spend his daughter's next birthday with her. Something more plausible.
"When jail time will make him miss his daughter's 10th birthday, ?an identity thief must find a way to "borrow" his twin's life to avoid prison for a month and be there for her special day"
I would watch this!
Hope this helps.