Hi @josh1u1are,
Sorry to hear that the issues you’re facing remain. See below replies to some of your comments:
I currently can’t find any ‘add new’ button on the plugin page. I am pursuing separate support and will attempt the 5 steps on Monday.
This may be due to a number of things, with malware also a possibility. I’ve experience this previously, in my case with the wp-config.php file had a define(‘DISALLOW_FILE_MODS’,true)
; value. You may wish to check this.
I am using Site Kit because I have been unable to verify my site on Search Console manually. I can see the HTML code in the page source for my homepage (the Site Kit plugin is producing the code) but Search Console still cannot verify.
I have tried manually inserting the HTML code using the Code Snippets plugin – no luck. I have tried using the AIO SEO plugin with a verification feature – no luck.
Does this indicate there’s a separate problem with my website?
Have you tried the html file upload? This works independently of your WordPress install, with no code inserts required. You just upload the html file into your sites root directly, using FTP or your hosting providers file manager.
I opened up?https://search.google.com/test/mobile-friendly/?and the HTML returned is for some random german website selling hoses.
This does indeed sound unusual. I would suggest checking your wp-config.php file and ensuring you can install plugins. After doing so install and activate a security plugin and perform a scan. I would also suggest reaching out to your hosting provider and seeking assistance on this. Unfortunately as you’ve indicated we are limited to Site Kit support.
Once you have your website clean do let me know how you get on with setting up Site Kit once more, or ask if you have any questions with the above.