WD> I think there may be a problem there. The router is ISP-provided and WD> pretty good. However there are 3 lvels to log into "User", "Admin" and WD> "Expert" and they only give-out the password for "User".
ISP-provided routers are usually not-pretty-good, because "they" are in control, not you.
I've got one Huawei LTE router with ISP branded firmware which doesn't allow incoming IPv6 not matter what. Even with "admin" rights...