If you’re having issues with wordpress.com, then you’re in the wrong support forum and need to ask your question at:
https://en.forums.wordpress.com/
This is the forum for self-hosted www.remarpro.com installations.
Having said that, the correct link for you to sign into your blog would be
https://yourusername.wordpress.com/wp-admin
If your blog is not hosted at wordpress.com, and is a self-hosted one, then the correct link would be something like:
https://yourdomain.com/wp-admin
but this would vary depending on whether you’ve got .com, .org, etc and in which folder you installed the software.
