Minibook X (2023 N5100) does not PD charge

I have a Minibook X 2023 that was successfully charging using a PD charger ( NOVOO 67W charger) from the second USB port. Today, it suddenly stopped charging. It still charges from the first USB port using the supplied AC adapter, but not any more from the second PD port.
I tried the charging with a PD charge capable battery but also without success.
The PD charger is not broken as it works fine with other devices.
Has anyone encountered anything similar, and have any advice on how to fix it ?