Hello @moshe1111
I am sorry if it is not clear – there is nothing wrong with the plugin, the reason for its existence is that Google stopped including the keywords people searched for when they came to your website. The plugin was made over 10 years ago.
So, the traffic is still coming from Google, “Not Provided” is to let you know Google did not include the keyword. There is nothing the plugin can do.
On the few occasions Google -DO- provide the keyword, you will see it listed. I operate a couple of websites that get more than average keyword info. I have made the plugin able to listen to hundreds of search engines to give you the best information that your visitors bring you, since Google does not want to help.
It will stay that way unless you got some really great contact inside Google, so stay safe and take care.