That support page you suggest... guess what. It's not loading either.
Restarting my router was a good thought. In this case it didn't help, I restarted the router but the problem did not go away.
I have some more information now though. When trying to get to the Lessons tab, I stumbled upon an error message that 's new to me. It stated "Website is offline", I attached a screen shot of it. Its link "Additional troubleshooting" links to https://support.cloudflare.com/hc/en-us/articles/200171926-Error-524
So indeed it does look like there is some connection problem somewhere between you and me.
I'll just put away my guitar for now and try again some other day -- maybe as you said the problem will clear up.
Jaco