Referrals to another Lebara network countries

Hi there,
Is it possible to send your personal referral code to someone in another country that also has Lebara? I haven't checked the T's & C's, though I have family in Poland, USA and New Zealand. If it was possible to refer internationally, would they get the benefits of joining the network the same or similar to referring within the UK?
TIA.

Pirate I can confirm that you can only use Refer and Earn in the UK for UK customers only. It's not something that can be done internationally.