Title: Error: Invalid date format, adjust it!
Last modified: May 15, 2026

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# Error: Invalid date format, adjust it!

 *  [enea2883](https://wordpress.org/support/users/enea2883/)
 * (@enea2883)
 * [1 month, 3 weeks ago](https://wordpress.org/support/topic/error-invalid-date-format-adjust-it/)
 * Hi guys,
 * suddenly, I noted that a few ore-order products on my website are not in pre-
   order but the clients can add to cart rather than pre-order…
 * then I noted on the backend this notice Error: Invalid date format, adjust it!
 * However, I click on the date on the calendar when I enable the pre-order on woocommerce
   single product backend.
 * It is very urgent
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-invalid-date-format-adjust-it%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Support [mathdaniel](https://wordpress.org/support/users/mathdaniel/)
 * (@mathdaniel)
 * [1 month, 2 weeks ago](https://wordpress.org/support/topic/error-invalid-date-format-adjust-it/#post-18911185)
 * Hi [@enea2883](https://wordpress.org/support/users/enea2883/),
 * I hope you are doing well.
 * We are here to help you identify the exact cause of this date format error.
 * To rule out a script conflict in your environment, please complete the following
   checks:
    1. **Clean Environment Test:** On a staging or test site, activate only WooCommerce,
       the pre-orders plugin, and the native _Storefront_ theme. Try saving the product
       date again to check if the error persists.
    2. **System Report:** Send us your WooCommerce Status Report (go to _WooCommerce
       > Status > Get system report_) along with your recent error logs so we can verify
       which third-party extensions are active.
 * We look forward to your reply with these details so we can proceed with the diagnosis.
 * Best regards, peace!
 *  Plugin Support [mathdaniel](https://wordpress.org/support/users/mathdaniel/)
 * (@mathdaniel)
 * [2 days, 11 hours ago](https://wordpress.org/support/topic/error-invalid-date-format-adjust-it/#post-18955638)
 * Hi [@enea2883](https://wordpress.org/support/users/enea2883/),
 * I hope you are doing well.
 * Thank you for bringing your case to our attention. Our development team operates
   through organized sprints and is currently analyzing the date picker’s integration
   within specific site localization environments to ensure absolute system coherence.
 * As a provisional recommendation to keep your pre-orders active immediately, you
   can input the date manually using the standard YYYY-MM-DD format (for example,
   2026-07-20) directly into the field, without the need to use the calendar selector.
 * This guarantees absolute validation compliance and allows the product data to
   save seamlessly.
 * If you are comfortable, we invite you to share the date format currently active
   under WordPress Settings > General to complement our technical review.
 * Best regards,
   peace!

Viewing 2 replies - 1 through 2 (of 2 total)

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to reply to this topic.

 * ![](https://ps.w.org/pre-orders-for-woocommerce/assets/icon-256x256.gif?rev=2944662)
 * [Pre-Orders for WooCommerce](https://wordpress.org/plugins/pre-orders-for-woocommerce/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/pre-orders-for-woocommerce/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/pre-orders-for-woocommerce/)
 * [Active Topics](https://wordpress.org/support/plugin/pre-orders-for-woocommerce/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/pre-orders-for-woocommerce/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/pre-orders-for-woocommerce/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [mathdaniel](https://wordpress.org/support/users/mathdaniel/)
 * Last activity: [2 days, 11 hours ago](https://wordpress.org/support/topic/error-invalid-date-format-adjust-it/#post-18955638)
 * Status: not resolved