you could try the Stax distributor (looks like you are from Portugal?):
From Stax international website,
https://stax-international.com/sdistributor-europe/
This is what is listed under "
Portugal"...
SOUND&PIXEL PLANET
Calle Electrodo 60, 28522 Rivas-Vaciamadrid, Spain
Person in charge : David Azevedo
Phone:+34 911948210
E-mail:
dazevedo@sound-pixel.com
Person in charge : Flor Nogueira
Phone: +34 963528799
E-mail:
fnogueira@sound-pixel.com
When I had issues here in the US with my 009 I contacted Edifier (a person I know there) and they gave me a contact to send it to in Hong Kong who then sent it to Japan for service. This was back when Edifier had just recently bought Stax and did not have service logistics in the US set up yet (back in 2017).