I have Wenro theme as you know. I upload my files on our main hosting of our company. We were too difficult while we were setting up. When we worked via Chrome, screen was always white. We needed to push Crtl + F5 always. After we did that, our website gave an error(500 Internal Server Error). After waitting 1 or 2 hours, our website started to run. Also, our visitors of website said us that website is too slow.