Forgot password on the custom e mail on my website

Hello, I have another e mail that is associated with my domain / website for billing and for logging on. I have on my contact page on the website an e mail that has info@ ( that has my website name) / info@_______.com

Someone had set up my site that the info@_______ would be directed to my personal e mail. That all worked fine for years. Now suddenly it isn't syncing. The sender gets a mailerdemon that my email folder is full. 
It's been years since putting this site up and I don't know how I'd ever know the password. Now I am seeing that GoogleWorkplace is in conjunction with Squarespace. It wasn't like this years ago.

Can someone offer some suggestions please. There is no number to call a square space and the same with Google Workplace. I am locked out of my website's custom e mail.

Thank you very much.

You'll want to start by tracking down the exact year you created the email and the website. It will help to know which service it was originally registered on.

I forget what system was used before Google but Google G-suite was used in 2019, which is now Google Workplace. If you know that it was created using G-Suite, you should start with contacting Squarespace support. You can do this in a live chat Monday-Friday. 

Squarespace technically provides these emails in partnership with Google so they may have options for you to access the email. Hope this all gets resolved! Sorry to hear this.

21 minutes ago, Louisi said:

Someone had set up my...e mail. That all worked fine for years. Now suddenly it isn't syncing.

We'd need to know your domain name. Without this, we cannot help.