Finish the work of a costum coded and b2bking (plugin) b2b portal

ANYONE CONTACTING US OUTSIDE OF UPWORKS WILL NOT GET THE JOB AND WILL NOT GET REPLIES. We have had a freelancer but the work is going to slow and we therefor need someone to take over the work and finish the project fast. The project is around 75% finished and needs to be coded very well. It is mostly smaller errors and design that needs to be done and it shouldt take more than a week if you work a lot. Please let me know your expirience with this kind of work and what you need to investigate if you can do the job and if you need anything to finish it. Also let me know the timeline you need to finish.