In the connect card, the connection method dropdown has the option to select proxy, same as when using the Fivetran Dashboard. But listing or creating a proxy is broken, it returns a 403 error:

{"exceptionType":"javax.ws.rs.ForbiddenException","exceptionMessage":"Page is not accessible","exceptionDetails":"{fileName:AuthRequiredDynamicFeature.java,lineNumber:207,methodName:blockRequestByTokenMethod,className:com.fivetran.app.jersey.AuthRequiredDynamicFeature$AuthRequiredRequestFilter}"}

I don't think connect card users should be able to list all proxy connections in my account. Maybe proxy connections can be limited to per destination / group id?