Hey guys, I have a problem that a website dropped from place 2 to page 5 on google.com if your useragent is en-US. It's a bit strange why it only happens there but I found something what could made the problem. A While ago I changed my PHP version for another project and this broke a function. Had 800 soft 404 errors, 30 501 errors and 130 404 errors. Already fixed nearly all but could this be somehow the reason for such a strange penalty? Anyone had experience with that?