OK, got help from my host Fatcow, read all the help sections here and now accessed my files having downloaded FileZilla. I go into the directory and there is a root folder, with the index.php file, and I first changed it to 666 and that didn’t work so then 777 as per the instructions on the plugin help site. Still get the same error message when trying to build the sitemap?
I have the same problem and all the research is saying I need to do as you have said. However, I am not a programmer and don’t even know what ftp is. Can you please give me ‘the idiots guide’ version of the above, or is this something that I will need to get a developer to help me with?