change username at www.ads-software.com

Sorry, that can’t be done. You can change the first/last portion of your name, set a nickname, and choose how to display your name based on those fields.

@yjeanrenaud A longer method would be to create a new admin user, log into the new account, and then delete the old one you know longer want.
https://www.wpbeginner.com/wp-tutorials/how-to-change-your-wordpress-username/

I thought the OP was talking about their www.ads-software.com account