Cannot launch admin console on website

I can enter website as administrator but tab for launching admin console is not working.
9819 SpeakEast TM

I am unsure what you mean by the "tab" for launching admin console.  If you "can enter website as administrator" then the BUTTON is working.  That's how I got in with no difficulty.  Please clarify!
Art

 

I guess I am unable to enter as administrator. I log in as usual, however I cannot enter the site to make changes. 
I am talking about the blue tab the says Launch admin console.
 

Your member user is not the site admin user.

I have been the administrator on our club's website for several years. I am able to get in from my iphone. 
Just all of a sudden, can't get in on my mac.

Clear your browser cache.