Couldn't find where to use the referral code when purchasing a service. There's no place to introduce the referral code nor there is a referral link issued when registering as a partner.

I bought a google pixel 9 wiped it and installed Grapheme OS before installing an eSim I have read that it might not be possible to install an eSim once Grapheme OS has been installed, before purchasing an eSim, can this please be confirmed? In addition, I travel frequently between Europe and Sout...