looking at the pictures the draytek looks set up correct to me.
you might want to chnage the gateway to .129
OR
by pass the draytek all together.
U must have a network cable going from the leased line to the draytek wan 2 port.
put a switch inbetween these two
then plug your mbg into this switch
set the default gateway to .129
so leased line to switch. mbg to switch and draytek to switch