I figured it out. The email I configured in Easy Sign Up had to be an email from the same domainname. This wasn’t the case last year, when I had it setup. Perhaps the hosting provider changed this in the past year.
So if my website is https://www.domainname.com, I had to use [email protected] for example, otherwise [email protected] wouldn’t work.
Oh well, it cost some time to figure out but I guess this resolves it for me.