FYI - As I said, I've changed the Settings so that my site will work with the error right now...
• I unchecked Immediately block Fake Google Crawlers
• I selected Treat Google like any other crawler
WHOIS of IP that was being blocked
Current Firewall Settings
Wordfence Activity Log
Yoast SEO says I don't have a robots.txt created but Google sent me a link which gave me this ??? Robots.txt
Don't know if this might play a role either, but I copied and saved a txt version of my .htacccess file. .htaccess I edit it in Yoast and know its a bit messy with the additions made automatically from settings in W3TC.
Thank you for your help
Katrina