I'm guessing that there's no one here dealing with Baidu... Is everyone fully focused on Google?

I have a few issues with one of my sites being indexed in Baidu and not too sure of how to resolve them;

1. Two subdomains were redirected to the root domain, but both (www. and another) subdomains are still indexed after ~4 months.

2. A development subdomain is indexed, despite no longer working (it was taken down a few months back).

3. There's conflicting information on what the best approach is to get HTTPS pages indexed in Baidu and we can't find a good solution.

4. There are hundreds of variations of the home page (and a few other pages) on the main site, where Baidu has indexed lots of parameters. There doesn't appear to be anywhere in their webmaster tools to stop that happening, unlike with Google.

I'm not the one who deals directly with this site, but I believe that Baidu's equivalent of Webmaster Tools has been used where possible to correctly index the site.

Has anyone else had similar issues and, if so, were you able to resolve them?

Thanks