I haven't heard yet from the whoisguard support, but I contacted namecheap.com in the meanwhile, here's their last answer about my inquire for the domain info:
Roman Pa.:
So, unfortunately I am indeed not authorized to resolve such cases in chats since it requires deep investigation. Firstly, please submit a support ticket in regard to this case to our "Hosting - Legal and Abuse" department here: https://support.namecheap.com/index.php?/Tickets/Submit
Roman Pa.:
Also, we strongly recommend you to submit a form to Internet Crime Complaint Center here: https://complaint.ic3.gov/
Roman Pa.:
We will assist and cooperate with them in any way we can, and our Legal team will assist you on getting information about the registrant of the domain"
Carlos Eduardo Wallauer:
I see
Carlos Eduardo Wallauer:
Ok I will proceed with that
Carlos Eduardo Wallauer:
Thanks a lot for the help though
Roman Pa.:
You are very welcome, I hope that this case will be resolved as soon as possible
Thats it so far. Continuing with the investigation. Any help is appreciated.