If you don't have the budget to pay for Gamban licenses. You can always signpost users to Gamban instead, which is completely free to do. Find out how and get free resources here
No, Gamban is designed to be used in addition self-exclusion for best results. No system is infallible, and our learnings show that layering protection methods provides the best protection.
Gamban users are notified 15 days prior to license expiry letting them know their protection will lapse if they don't add their payment details. If the license expires the protection will simply stop working within 24 hours of expiry.