Proxy access with C# and custom docker image leads to 403 error on free plan
I'm currently on the free plan and wanted to create a custom actor using C# within a Docker image. Everything works as expected unless I try to use the 5 available proxies. No matter what I do, I keep getting the following error:
One or more errors occurred. (The proxy tunnel request to proxy 'http://proxy.apify.com:8000/' failed with status code '403'.")
Credentials are properly set. Without valid credentials I'd get a 407 error. I'm using the normal HttpClient from the .NET Framework.
Any ideas why it doesn't work?
What does "Access from external HTTP clients (outside of Actors) is not enabled." mean in detail? Couldn't find more information in the documentation.
Thanks,
Sven
