Safari problems
Hi,
I have a 24" iMac 2007 running El Capitan (it won't update to a later OS) I have Safari version 11.1.2 on it. I am getting issues with trying to get onto on line banking, saying the certificate provider for the banking site is not trustworthy, I think this issue is coming up because Safari needs up dating, but I can't seem to do this. Can this be done, or should I just use a different browser?
Thanks in advance for any help
iMac, OS X 10.11