My site is a handful of static HTML files sitting on Netlify's free plan. Two weeks ago I attached a domain I'd bought for it and let Netlify handle the HTTPS - that worked, the padlock was fine, and I stopped thinking about it. Then I moved the nameservers over to Cloudflare for the caching and left the proxy on (orange cloud). Since then the site throws 526 Invalid SSL certificate, and Netlify's dashboard shows the certificate as "waiting for DNS". My guess is that Cloudflare is answering the...