I'm new to WordPress (sorry), bought a theme, installed it (automatic updates turned on) and have been making my customisations to the child theme - so far, so good. The site started to slow down a lot and pages failed to load. Not sure why, so cleared the cache and disabled the plugins by renaming the folder via FTP. That seemed to clear the issue, so was able to access the admin page, where I deleted any unused plugins and deactivated/activated each of the plugins in turn to see if it effected the site (only reputable plugins used). Everything seemed ok - so still no idea what caused the issue.
I didn't touch the site for a few days, now I can't access the login page. I can see my site pages but cannot access wp-admin or wp-login.php (am getting a 404 page not found error).
I followed the steps for a manual update here ...wordpress.org/Upgrading_WordPress but it hasn't made a difference (my url is definitely pointing to the correct place as I can see the files in via FTP). I searched for some more help online, so then tried renaming the 2 child theme folders to disable the theme, thinking the site would revert to twentythirteen (I had deleted twentytwelve, but replaced the files for twentythirteen when I did the update). Still can't see the login page, but am getting a blank white page instead. The rest of the site pages are showing the same blank page. I restored twentytwelve (with the files from the update) and tried again - same result as with twentythirteen.
I'm thinking I might need to start again... If I delete the whole WP directory, would I need to restore it manually to retain the url or can I do a fresh install using my host's installer (and keep the same site url)?
Can anyone help as I'm all out of ideas now...?? :(
Thanks in advance!!