Removal of Plug-In and errors from website.

I hired a freelancer to install a plug-in (Amelia) that appears to have a lot of complications, errors and bugs. I need someone who can remove this plug-in and afterwards, make sure that the webpage format still maintains its format and that everything on the webpage runs smoothly. No bugs. No errors. No failures to load. Please do not apply if you are not someone who does not pay attention to detail or who cannot work independently and problem solve. I spent too long correcting the continuous errors of the past freelancer and I do not wish to repeat the experience.