get menus popping up every time I click on any part of the screen
Today I was working with an online grocery store and suddenly, no matter where I clicked, a menu would open listing various options. When I clicked in the address bar to go to another Website, another menu opened. I just installed a Synology router last Friday and connect an external drive to it to back up 2 computers to 2 different volumes on the disk. Could this have created a conflict somehow? Can anyone help diagnose this problem. Obviously, the problem disappeared after about 45 minutes and my Mac is back to normal.
Any suggestion would be appreciated.