@eXch.cc is it possible that some IP addresses are banned by eXch exchange or it could be something browser related?
Some people told me that they can't access eXch website with clearnet domain, and they receive message like this in Chrome browser:
We don't have a possibility to ban IP addresses because our system and servers don't process nor log them. It's explained very well in our ToS.
Errors like one you reported could happen for many reasons, but mostly they are temporary and some retries fix them. We will add more reverse-proxy bandwidth capacity soon and request fail rates should reduce.
Please try another browser to see if the issue persists.
While debugging the website, I see you are getting this issue where when you select BTC for both options, it's shown No pair for this found. That is correct however user shouldn't be able to do this on the first hand and you can use client-side form validation to fix this issue, it will surely improve the Quality of life and experience of the users.
[...]
This is not an issue and that error is a clear indication that the same coin direction is not available, therefore I am not sure how it affects users "quality of life" at all.
Avoiding selecting same coin direction can only be fixed by enabling JavaScript and monitoring user's selections. We don't plan to provide a JavaScript version of the site yet.