Fix errors on wordpress site and adjust images to responsive
I have some issue with one website that 3-4 times every day still Error 500 and that cause down status for all my hosting sites. Maybe a plugin that not work properly or php theme instruction (nattywp). Error log work with this string:PHP Fatal error: Maximum execution time of 65 seconds exceeded. I have Tried to solve increasing maximum resource possible with my provider, but error shot everyday. I have tried also to change hosting?and provider but in that case website it's came off everytime. I have also tried to update from wp 3.4 to wp 4.0 but I have obtained that logos and images has lost responsive reduction for mobiles. There is also to fix this.
Quickly and Cheap - I hope will be a small to fix
Wordpress - CSS/PHP - Senior Expertise