Sorry about your being blocked. A day hadn't passed due to the timing of your second visit--sorry. I just changed the ip address in the table so you aren't blocked now.
Ok, I think I figured out what happened. You first went to the ferguson site. You may clicked on something but the same page was reloaded. Then in a different tab you clicked on my home page from a google search results page. Then in a third tab you went directly to my home page. Then you ran screaming frog and the program stopped it without a message, seeing the word 'spider' in the useragent. Then you tried it again and it recognized that as a stopped bot and gave the message about suspicious activity.
The program wipes out sessions and cookies when a user goes to the home page (it's not even a link anywhere) since that is just a location-choosing page, so when you opened it in a different tab the sessions were wiped out. It had nothing to do with you being in incognito or not having cookies allowed.
Does this sound like what you may have done, and in sequence?
That's what it looks like, and that, if correct, is a huge relief for me since that is not usual user activity. (Although I may have to reconsider whether its still a poor approach).
I don't know about what happened with your second visit and the timeout. curious that you got some 60 pages crawled or so--I don't suppose you have anything that would tell me the first 3 of those so I can look into why it timed out? The table isn't keeping the ip on crawling so I can only look those up by the url crawled and the time.