send Iskon e-mail to
pomoc@iskon.hr and ask them to change (Zyxel) router configuration to BRIDGE MODE, tell them to provide you PPPoE username and password
it works 100%, since I have 4 Iskon VDSL connections on different locations, all of them are in bridge mode with ASUS routers behind Zyxel
I got this setup working for OpenVPN site-to-site tunnels etc. connecting remote offices with the main office (HQ)
did anybody got Moj.Iskon app running on mobile phone (android - playstore)?