1- strange color; it is very white !! even u did not use color, it should became more yellow !!
2- it is not solid, the curds are so big for swiss type of cheese, and they are not fused together.
3- there is mold inside, and this mean there was air (oxygen), which is not the case of swiss (only Co2)
4- there is huge cracks under the wax, why??
5- i think one of your problems is the pressing, check how much press u should do on such wide mold.
6- swiss needs raw milk i guess, i saw the curds in ur site of the cheese just after cutting, they look not normal and loose.
7- so milk + press problems i think is ur problem, because i am sure of the process that u will not make a mistake (temp ..etc)
8- swiss type is pressed under its whey, did u do so ? (for maximum fusing with no mechnical holes)
lets discuss it all