I started to have similar issues on 8/28/24. I’ve been looking through the forum since then. It seems like you have the same issue that was referenced here: https://ww.wp.xz.cn/support/topic/registration-spam-18/
I would think they are doing what was suggested in the previously mentioned post because you have a URL with “/my-account/“. I’d add a recaptcha to that page if it all possible. I checked you site and saw that you have a reset password button on your website on that page that might be part of the issue.
https://energenetics-old-world-farm.com/my-account/
I hope that helps. I’ve been struggling with this issue for a while, and it’s negatively impacted my company’s online reputation.