Suddenly spam registrations

Since 11.05.2024 I get. massiv spam registerings.
I have nothing changed. alsmost 400 new users in 2 days, I always get no delivery possible emails ( I guguess confirmations).
I have social loging (mostly used via google) and form with google capcha.
It has worked for long long time but suddenly no more.

I see new users as Customer not subscriber.
Could it be somehow over Woocommerce shop?

Such email are still comming:

This is the mail system at host smarthost-dus.org-dns.com.

I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.

…….

……

Password Reset Request

Hi boilermakerlaura,

Someone has requested a new password for the following account on Rainbow Songs – Texts & Music:

Username: boilermakerlaura

If you didn’t make this request, just ignore this email. If you’d like to proceed:

Click here to reset your password

Thanks for reading.

P.S. I also don’t see edit link when looking someone profile where I could edit profile for example country or so.

The page I need help with: [log in to see the link]