@spd2612 That's a terrible "business" gateway.. try to get something business grade..if you insist of using ethernet SFP modules , get a TL-SM331T instead. I do not recommend that unless ethernet is...

@Jeesoon1 is the connection failing PPPoE ? does it uses the internet vlan advanced option?

Thanks I got the message, will try to provide more feedback soon.

@DREEMus I have a backup this time for the old controller version that doesn't exhibit this problem..I also have another SFP device which I configured to untag the internet vlan without he router...

@Hoamboy ok, thanks. unfortunately this implies I can'¿t touch the anything that modifies the wan config otherwise things stop working.

@Hoamboy latest 1.3.0 firmware