You have too much load for simple hosting...in Your case, or VPS, or You need to find another hosting
This could not be. What did you change on the site? What nekorektno?
you have not explained what necrosectomy, which cannot be a principle because the site itself was not changed
you have all the eje of a huge tomodachi entire site Kirpichny of risunok larger than 5 MB, optimize it. tanacea to be talgairan size