I have an fsnet.co.uk website. I've been uploading to it regularly for 10 years using CuteFTP.
Recently, however, although the FTP upload works perfectly, the new version of the uploaded pages do not always appear online.
Sometimes you see a really old version of the page (dating from around April 2014) online. Then when you look an hour later the new version is there. Then later the April version is back. It's just random whether you get the latest version or the April version. (But never a version between the April and latest versions!)
I've tried accessing the site from other computers, on other networks and from other locations over the past couple of weeks. Always the same pot luck whether you get the April or the latest version.
How can this be?!