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Dear,
Thank you for your message.
The bpost plug-in works under WP 6.4.2
The plug-in takes over the data from Shipping Manager. This error message can indicate that your standard sender address is not filled in Shipping Manager.
If you need help with the complete Shipping Manager set up or you have more questions, please contact us via our mailbox : [email protected]
Regards,
Bpost esolutions team
Thanks for your feedback. Don’t hesitate to contact us by mail at [email protected] if you have other questions. As you confirmed ticket is solved now.