in the latest WordPress Version update: 5.7.1.
my website does not work well I also have a problem with FV Player Pro.
in Check template, i have this message.
It appears there are stripping the query string versions as https://live-webcams-griva-paiko.com/wp-content/plugins/fv-wordpress-flowplayer/flowplayer/fv-flowplayer.min.js appears without the plugin version number.
Some site speed analysis tools recommend doing so, but it means you loose control over what version of plugin files is cached (in users’ browsers and on CDN). That way users hang on to the old plugin files and might experience visual or functional issues with FV Player (and any other plugin).
You can read all the details in our article: How to use WordPress with CDN.