I'm looking into this now. Had never had anyone complain before. I'm not going to get rid of cloudflare, my site has been up consistently after several hours on the front page, which obviously doesn't happen for everybody. Having their caching is worthwhile. But it does seem like it's possible to disable this challenge page going forward. [1]

I'll take a look when I'm off work later.

[1]: https://support.cloudflare.com/hc/en-us/articles/200170096-H...