Hi guys, I have a problem that I'm not sure if it's me or the customer. I get a response back via the API of the customer. In this I get a link, which I save and then open it in a new browser tab. The browser tab also opens with the correct URL, but I can't get access to the page. The customer server only allows certain IP addresses through. For this I have given him my external IP address. The customer then set up a sandbox that I should be able to access with my IP address. But this is not the case. Is there another possibility / issue in Zendesk that I may not know yet, why the page is not displayed to me? Maybe I still need to configure something in manifest.json. Am a bit stumped at the moment. I also do not use a proxy! At the moment I can only imagine that the customer something does not fit with the release. At the moment the website to be opened shows me only the following.
The website is not reachable ... has refused the connection.
Try the following:
Check connection
Check proxy and firewall
ERR_CONNECTION_REFUSED
Can someone help me with this?

Can you share the code snippets of how you're trying to access this API? This will help us to be able to debug more effectively.
Thanks!