I have the same problem of a topic that has been closed with a fix.
It’s suggests to trash both Navigraph charts and Simlik apps. I worry that I will loose my “saved Flight Plans” or they reside in my Navigraph account?. I would hate to loose them
Can the “fix” be done on Safari, or I should download Firefox Mac?
I have changed the default security preferences on my Mac.
Thanks for your time. Fred