Keep a compact inventory
For each server, record the product, package, licensed public address and expiry date. Store payment receipts with order references. Keep the inventory separate from passwords and private keys.
Review before renewal
Compare current usage against the package limits. Confirm whether the server is still needed and whether the billing contact is correct. Review the next price rather than relying on the first purchase amount.
Separate refunds and termination
A payment refund and license termination have different consequences and records. Check both statuses when resolving a cancellation. Keep the provider response and support discussion linked to the original order.