If you can’t deactivate your GeoZilla subscription in the app, that’s because premium billing isn’t managed inside the app itself — you have to cancel through the platform that charged you.
For Android, open the Google Play Store → Menu → Subscriptions, find GeoZilla and tap Cancel, and for iPhone/iPad, go to Settings → Your name → Subscriptions → GeoZilla → Cancel Subscription.
If you bought the plan directly on GeoZilla’s website, log into GeoZilla.com, go to your Account → Subscriptions, and click Cancel Renewal there.
After cancelling, keep a confirmation email or screenshot so you can prove auto-renewal won’t happen again, since unsubscribing in the app alone doesn’t stop billing.
If the issue persists, share your experience and consider filing a complaint on Xolvie to seek a resolution.