Hello, Claudio Ferro,
Checking your staging web-site now we see that it is unavailable to view. Maybe you removed it or moved that staging to another address?
We are able to help with questions strictly related to our theme functionality, if brands on your site were created while using another theme, we cannot assist you, unfortunately.
Please read this topic – https://www.8theme.com/topic/need-to-know-brands-meta-key-need-urgent-response/
We hope it will be helpful.
Kind Regards,
8theme team