moca not working

I just had WOW install cable in my house and can't get moca working on roamio pro and mini. I have the cable coming into the house and have a 3 way splitter, with one coax going to modem, one to pro and 3rd to mini. There is no POE filter installed, but would that cause the problem? When I connected the cat5 to the pro, worked no problem, but moca won't work.



Could lack of filter be the issue or do I need to change another setting?