Hello @Yvan69falzon ,

Welcome to our community.

According to Google Translate, your question is that the power light of RE190 keeps blinking. If there is any discrepancy, please describe it in English.

Please try the following suggestions:

1. Try a Different Power Socket:
Plug the extender into another power outlet to rule out any issues with the current socket.
2. Perform a Hard Reset:
While the extender is powered on,use a pin to press the button for 1 second to reset the extender.. This can sometimes restore the device to normal operation.