Trying to disconnect old website.com email address because It same as new one

Hello All,

I am inquiring about changing my email address. I started out with WordPress site. I am on www.remarpro.com and the accounts are still connected. The issue is when I comment on other accounts it goes to my account that I established before. I have a website and I do want my account to link to others in the same niche. If anyone can help I appreciate, if not can you direct me to the person in WordPress that can.

Thanks
Lori E