Dear @Marvin_S & @terziyski , Thanks for your time once again! However, I could not find any solution to this. I am now confident about the problem which is defiantly couldn't set the VLAN ID to "0"....

@terziyski Hey again, I think the problem is related to VLAN configs. I need to set the VLAN ID for the internet to 0 (my ISP uses "0" for the internet ) but my TP-Link Router doesn't allow to do...

@terziyski Thanks for the advice! I've noticed I cannot connect via a direct connection of ZTE ONT to my laptop. I connected the LAN1 port of ONT to the laptop's ethernet port and tried to build a...

@emilionut96 Hey, thanks for the advice! I tried this but nothing changed. Already filled the PPPoE credentials and MAC address out to my TP-link router. I left the ONT for more than 8 hours and then...

@Marvin_S Hey, thanks for your reply. I checked the PPPoE parameters after ZTE H3600 V9 built the connection correctly. Those are my PPPoE account information (username and password) and I am using...

@emilionut96 I'm not sure about the dynamic IP mode. Because the old ZTE router uses PPPoE to build connection. They never changed this as well as there is no option for dynamic IP mode for this...