Question about Zyxel AX7501 with XGSPON SFP+, VLAN 10

Yes, you can. So at least it is set up that way in the configuration, but I have not yet been able to get it to work in practice (also together with the support from Init7). When I switch to bridge mode and restart the device for safety's sake, it still behaves as if it were in router mode. We haven't found anything on the net yet either.
My current solution: router mode with a 1:1 NAT. Not exactly what I would like, but at the moment the only way that works.