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Try Ctrl + F5 to refresh page... or
You probably have stale cookies. Remove the cookies to the site and relog on.
Cookies may be good but they can give heartburn events like this.
In case you're hesitant....
F5 triggers a standard reload.
Ctrl + F5 triggers a forced reload. This causes the browser to re-download the page from the web server, ensuring that it always has the latest copy.
Unlike with F5, a forced reload does not display a cached copy of the page.
Thanks for you suggestion however I've already tried that and many more.
When I try to connect to machsupport.com, I receive the following message; "ERR_CONNECTION_TIMED_OUT". The default Window .net time out is 30 seconds. I changed this to 60 seconds with the same results in Chrome, Edge & FireFox and that with all cookies/cached web pages purged. My daughter, who is on a Fiber Connection at work, receives the same message. Until yesterday evening, I could connect to their site on my iPhone with Verizon. Starting yesterday and also today I receive "Safari cannot open the page because it could not connect to the server". I can reach any other websites with no problem. I think there must be an internet backbone problem somewhere in our area.
I received an email from machsupport.com with a link to my License File but I can't download it because I can't connect to their web site! I replied to them stating the problem so hopefully something will get resolved.