On checking the Portuguese domain registry dns.pt, the domain fruugo.pt is also registered to the above address in the UK via a company in Luxembourg. (See attached pdf)
I also checked Company NIF registrations in Portugal via nif.pt and Fruugo does no appear to have a local NIF Number. Also their is no Portuguese registered address on the Portuguese site and the links for privacy and terms link back to their contacts page in Portuguese.
So I assess that all language versons of fruugo.com link back to a UK-based company.
A final point. IMO, the Portugal version of the site does not comply with EU GDPR regulations.
I suspect after 31/12/2020, the company may incur problems trading in Europe.
If you send me details of the shirts you want via pm or other, I'll see if they can be sourced from elsewhere in the EU.