I have users from these places that are unable to visit my site:
Ukraine
Belarus
Russia
I have the IP addresses they are connecting from. Are there anywhere I can check to see if the ISP they use is blocking Cloudflare? Or can there be another reason for this?
Would not expect it to be location specific, more likely randomly caused by some issue on the server. Post linked above provides some troubleshooting tips.
I got some more info if that can help.
Ray ID for error: 4fbe71a37e1d8b74
And then they ask: Is there any chance we can get an log file from Cloudflare displaying which HTTP response was received from our web server which caused Cloudflare to return http status 520?
Is this the right place or is there a direct support e-mail I can write to?
To get info about the connection, you will need to contact support.
To contact Cloudflare Customer Support, login & go to https://dash.cloudflare.com/?account=support and select get more help. Please give Support the complete details and link to your Community post. Here’s a bit of background on Cloudflare Support for reference: