Hello @dinisbcoelho,
Thank you so much for trying to assist me, but I’ve done all these yet the problem still persist.
In fact right now I have no single plugin installed, I have deleted them all, and I can’t Install them again because of the same problem.
I have also switched to default theme for my version of WordPress 4.6 which i believe to be Twenty Sixteen.
I’ve also contacted my Hosting Company BlueHost, and they were the once who even helped me to uninstall, delete and change the theme because I couldn’t do it because of the same problem.
Please do you have any other suggestions, I would like to learn about them.