Fix wordpress plugin(3 Hours 100$)

Hi, it's very urgent project. It'll take less than 3 hours for the one who is expert, it'll take more than 20 hours for someone who is not expert. I'll give fully detailed instructions to the candidate. I'll pay 100$ directly to his account once he finishes. Basically , it's working in firefox, but not in chrome. Have you used date picker in wordpress booking plus? (if yes, + bonus point) I need someone who can finish it within 3 hours. Once successful, He will be invited to our development team, and will get regular assignment. Good luck.