Pennsylvania doesn't have a specific auto-renewal law, but the UTPCPL (no specific auto-renewal law) (73 Pa. Stat. § 201-1) plus federal FTC rules protect your right to cancel.
73 Pa. Stat. § 201-1
Penalties: Treble damages under UTPCPL
SubScrub automatically cites 73 Pa. Stat. § 201-1 and federal laws