Since I lost the gmail account I used to create my account can I reuse my username and use a new email I have from Yahoo.com?

I created my account with a gmail account I no longer use as I deleted it. I did not remember Scarlet Blade needed it. I have a yahoo email account and am willing to use it for Scarlet Blade. Somehow my password changed and I was not informed of the change. None of my old passwords work. Thanks for any help with this.

I need a password reset on Scarlet Blade. I no longer have access to the email that I used when I created my account. <email_1> became compromised and I deleted it not realizing that I still needed it for SB. My email is <email_2>. This email works with the forum but not the game. If I can not get a password reset this will be the third time this has happened. I do not change my password the game does and I am getting tired of it. GM Edit: Removed Emails.