Unable To Login

Take a look at the instructions for resetting your password first. Due to having trouble with your username/ID, you may want to use that information to open phpMyAdmin or whatever database management tool you are using to take a look at your account info and see if your user_login credentials are what you expect them to be before troubleshooting any further.

https://codex.www.ads-software.com/Resetting_Your_Password

https://www.devlounge.net/publishing/reset-a-wordpress-password-from-phpmyadmin

You also seem to be using an outdated version of WordPress. After you resolve your login issue, you may want to consider updating to the latest version.