Updates
When I press about this mac it says OS X Yosemite, I just now tried to update to high siera so i pressed get and put my password in but then it told me to use the code that came up on my other device, so I did that but then it said that my password was typed in incorrectly too many times when I only typed it in once and it was the correct password. I can't download the high siera so what can I do?
iMac 21.5″, OS X 10.10