Finish WoWonder Customisation

We need someone to finish a project that is 75% finished but the developer had a family emergency and has to leave for two weeks. We are working with WoWonder PHP Script and we have added a custom form which is displayed on a slide out tab. It already includes most of the functions although needs a few features/options to be added mainly to the admin panel and a few to be features to be refined/ cleaned up - nothing too major. We need this working on desktop and mobile browsers and we are looking for someone who has worked with WoWonder/ PHP before. We originally paid £125 but gave the first developer £70 which means there is £55 for anyone that can finish this project. We work on community donations so please do not ask for more money, we do not have it - Thanks!