Hello, the site has quality unique content, quality link building (only few quality guest post and things like that) and it was 4# position on google for the homepage (main traffic key). One month ago the site dropped on 8th page of google and now the homepage has been outranked by an internal page of the site. On Google Webmaster Tool no alert, no manual action. I tried to change text on homepage, title and analyze all link. Nothing strange. Just one thing.. the site had some server problem (slow and offline for more days) and we changed hosting. Any suggestion? Thanks.