I'm a PAYG subscriber and I have a single 4/24 server running. I've been on the free tier for the last year and my billing alert went off yesterday. It was set to $1.

I'm a PAYG subscriber and the notice on my account says

"Always Free Ampere A1 Compute entitlements have changed. This update does not affect your paid resources, existing paid workloads or bill. Contact support for further questions."