@nico59821 , according to Cloudflare, you must be hallucinating. The issue with intermittent 520 errors was thoroughly investigated and “fixed” by Cloudflare. The thread discussing it was closed even though most posters (including yours humbly) continued to get those errors after the “fix”: Sometimes a CF 520 error Opening a ticket doesn’t help much: after you provide details, they don’t answer for a week and then switch back to their canned response of " Error 520 is essentially a catch-all response when something unexpected happens or when the origin server incorrectly interprets or does not tolerate a request bla bla bla". AFAIK, most sufferers simply stopped using Cloudflare - the only working solution available.
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