What are the reviews on hardware offered by umbrelos guys?

Thanks. I updated the post with more info. Its an unknown local brand which modifies chinese product. Some settings are still in chinese and there is no documentation.

Thanks a lot for the info. It let me to the solution. Talking to ISP about above settings, I was made aware of another superadmin account for router that made it possible.

That was very helpful info at this stage. Thanks a lot for this.