WP Simple Pay Documentation
Plugin Compatibility
Fine tune your website and plugins for the best experience.
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How to Resolve ‘rest_cookie_invalid_nonce’, ‘Cookie nonce is invalid’, ‘Cookie check failed’ Errors
Various steps you can take when you see errors related to cookie nonce tokens
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How to Configure Wordfence Security Settings if There are Issues With Failed Payments
Learn how to use WordFence Learning Mode to resolve certain failed WP Simple Pay payments.
Start Accepting Payments Today
Start accepting one-time and recurring payments or donations on your WordPress website.