I have installed Wordpress 4.4 on my own CentOS 7.2 server, and then installed a theme by extracting it to the wordpress theme folder and activating it from them admin part.
That is working fine, but now I want to install a few plugins, which I have as .zip files. So I go to the Add plugins page (the one which says "If you have a plugin in a .zip format, you may install it by uploading it here.") and then I upload the .zip file (mt_testimonials.zip) but instead of installing the plugin, it redirect me to a ftp upload page, where I can input my ftp credentials. Anyone who got a clue why?