Why no notifications on Pinterest?

I've done a test, I created a Pinterest account, then with it I followed my personal account, and with my personal account I didn't get a notification of the follow?

Why is this? Had Pinterest changed something?

This would explain why in recent times I haven't been getting followers on my accounts, when usually I'd be getting about 10 per day.

If people are getting no notifications about me following, how are they supposed to follow me back?

Is this something with new accounts only?

If…

Why no notifications on Pinterest?