Problems with Wordpress

Hi all, I’ve been using OVH with the Wordpress module for around 6 months and since starting, most of the time my website won’t load and says it takes too long. I do have to note that I’m not great at understanding servers, or any of the other codes so I’m not sure if I haven’t activated something or if this is a Wordpress problem.

Of course when logging in through Wordpress it can say the username isn’t valid due to the username but I’ve logged in through my old Wordpress and then added the new site that way - not sure if this was correct.