To submit a site to Bing/Yahoo you need to use the URL below:
http://www.bing.com/toolbox/webmaster/
Bing used to have an anonymous submission page but have discontinued that in favour of registration.
References:
https://kb.yoast.com/kb/how-to-connect-your-website-to-bing-webmaster-tools/
https://blogs.bing.com/webmaster/september-2018/Anonymous-URL-Submission-Tool-Being-Retired