Hi there,
I have checked all the details of issues and fixes. I have checked the document and many issues are related to php custom functions. As you listed that, you had some issues with developer and now several features of website are not working. I think, he have removed functions of several features from custom php source code but I will confirm it after checking the source code. There are several css and layout issues listed in the document which is not a big deal. Main issues are related to php core and I will resolve all the issues. You can check my profile, I am professional and I have 15+ years of experience . I will provide you full support and you will pay me after the completion of the project. I am also working with my past clients and I will not disappoint you. I hope you will select my services and I am waiting for your prompt response.
Thanks,
Best Regards,
NeOLiO