访问r.jina.ai突然网络不通

你好！
访问r.jina.ai 突然连不上了，如何解决？
报错如下：
curl: (7) Failed to connect to r.jina.ai port 443 after 75278 ms: Couldn't connect to server

另外，如何联系客服？官网上没有客服入口

The issue names only the r.jina.ai endpoint and a curl connection error; no repository file, test, or entry point is provided. First verify whether the endpoint is reachable and review the project's support or contact path; done would require an identified service-side cause or documented resolution.

Written by the indexing model from the issue text.