Thank you Tom
So here are some updates
I was able to borrow an AR2412 to test with the SQ6 to see if the AR2412 was the problem. However, I still had the same issue of it saying slink not connected.
I then proceeded to try Tom’s suggestion and there was no connectivity from the SQ6 as well as my AR2412. When tried with the AR2412 I borrowed there was connectivity, So the conclusion is that both the slink and the dsnake port have been damaged.
Is it possible for these ports to be replaced? Where can I get replacement parts? Is there any video tutorial on how to replace them?