I have an amateur wordpress site for a club which seems to have been hacked. With some help on here I have undone some of this but I've still got quite a few problems. Mainly I can't get into the dashboard or edit any of the pages. I can log in with my old admin account which still has all the attributes in the db (usermeta) implying it is an admin but I get
403 Forbidden You do not have permission to access this document.
when I try to edit any pages or do anything other than view pages. Clicking the dashboard is the only thing which doesn't take me to a 403 and that takes me to an entirely unformatted page which starts with a list of links (that would be in the dashboard) and then what looks like it would have been the content in the main pane unformatted.
If it is relevant I have an odd change where the instance name of Wordpress seems to have changed to My CMS ? I cant remember what it was before but it wasn't that !
I've tried adding a new admin user in the db but this doesn't seem to have worked. I've not investigated this too much as the original admin still seems to be in there correctly.
I was wondering if there is a plugin or install option (I'm operating through Plesk) which would overwrite all the standard PHP/css etc files without affecting content too much (at least without deleting the content realise I might be left with quite a bit of reinstalling of theme / plugins). Failing that maybe there is a plug in that could help ? Failing that any suggestions on offer ?!