Upgrade troubleshooting

Pro cannot activate: confirm WooCommerce/Core active and minimum Core version.
Product becomes non-purchasable: check Woo stock, effective assignment, location capability/activity and Order Method mapping.
No methods appear: create and enable real WooCommerce shipping-zone method instances first.
Need to back out: deactivate Pro; data is retained. If Inventory Mode was used, follow Pro maintenance and licensing reconciliation guidance.
For purchase, download, license, or support issues, use the official Leanmerce Account, licensing, and Support routes.