Help with 520 Error

Hi Support,

My users are getting sporadic 520 errors as soon as I turn on flexible SSL/TLS on my domain:

Here’s the requested files I’ve been told to supply, is there anyone who know’s what might be causing this? I’ve asked the server hosts and they’ve told me the CloudFlare IPs are whitelisted and there’s nothing more they can think of to do!

Any support and advice would be very warmly welcomed!

Full URL(s) of the resource requested when the error occurred
https://www.iomtoday.co.im

Cloudflare cf-ray from the 520 error message
Ray ID: 68f110ab0b5565f4 • 2021-09-15 10:10:25 UTC

Output from http://www.example.com/cdn-cgi/trace (replace www.example.com with your hostname and domain where the 520 error occurred)
fl=21f347
h=www.iomtoday.co.im
ip=81.141.85.66
ts=1631697348.124
visit_scheme=https
uag=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
colo=LHR
http=http/3
loc=GB
tls=TLSv1.3
sni=plaintext
warp=off
gateway=off

Sadly I can’t see how to attach the HAR files…

You shouldn’t do that in the first place.