House Pre-wired Ethernet Outlets not working

[news]

[wireless]

Our house has pre-wired ethernet cables and outlet/ports in the wall (Figure 4). Only 3 of them work, and I'm trying to get one of the others working. Two of the working ones is in the same outlet plate, so similar to Figure 4, but with 2 blue outlets and no white; one of which is connected to the Wifi router. The third is in a different room which looks like (Figure 4).

The house has the Telus NAH that connects with our pre-wired ethernet and the NAH was already setup by the previous owner who was also subscribed to Telus (Figure 1).

When our Telus technician arrived, he had to rewire? or joined, one of the pre-existing ethernet cable (blue) of the house with his own ethernet cable (yellow), to connect to the NAH (Figure 2). He said that these blue cables aren't real ethernet cables, because they must click when it goes into the NAH port. It's true some of them do not click, but some do. But I'm pretty sure on all the blue cables, including the one he rewired, says CAT5e.

Now only the NAH ports that is connected with the yellow cable is lighting up (Figure 3); when moving the yellow cable to the other ports, the other ports light up. In contrast, all the blue ethernet cables does not light up regardless which port its connected on (I tested all 5).

Do I have to rewire/join all the blue ethernet cables with yellow ones, or do I get a switch to connect with the yellow and connect the blues to the switch? Is there something wrong with the blue cables?

How can I get my other ethernet outlet around the house working?

Figure 1 (Internet Box)
Figure 2 (Yellow ethernet cable joined with blue)





Figure 3 (Telus NAH ports)
Figure 4 (One of the ethernet outlets on the walls)



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