They reinstalled the core wordpress files
Thanks a lot my hosting support team removed the injected script now the sitemap is working fine, can you please take a look if the script was removed on [ redundant link removed ]
Other big problem I am facing all the time with dropdown options whenever I click on dropdown its color change to white & hide the placeholder text until I click on another option you can see the problem here http://canadaautodeals.com/wp-content/uploads/2020/12/error.jpg
