Read the platform’s royalty explanation for each format and territory. A list price is not the same as author earnings; printing costs, retailer terms, delivery fees and taxes may affect the amount. Note the reporting period and payment threshold for every account you use.
Keep a simple ledger of statements, editions and promotional changes. Compare trends over time rather than drawing conclusions from a single week. If a report is unclear, consult the provider’s current documentation or a qualified financial professional before making business decisions.