Multiple subscribed alerts from same email

ℹ️ Support
1

I’m getting this alert multiple times. I noticed it’s 1 email every minute.

I also blacklisted the address.
v3.6.16

gyyyt1504@gmail.com has subscribed

Subscribe page: 1
No user details changed

List Membership:

* Calendar

2

And now it stopped just like that.

3

Someone subscribed to my list and now getting an alert every minute again.