either yung mismong account mo is not ph base(or yung account mo is ph base, pero ang nag invite sayo is not). error 4-error 600-error -540 . related to location or unblocker (vpn)
pero may napansin din ako sa mga error if yung mismong account mo is bin generated, 2 invitations lang pwede, the rest mag eeror na. thats all.