So in case you weren't aware, the forums broke and Yodo transferred them over to their possession. This had the unfortunate side effect of erasing a few months' content from the website--mainly CDCs and Tournaments.
However, this also means that any links to the old forum will no longer work. For me, this means I need to redo my signature and the navigation links from my longer fanfics, but it has far-reaching effects that will probably never be completely fixed. There's also the Wikia site, which had some links to the forums as well.
The main difference, as far as I can tell, is that instead of the base site address being forum.lightmare.com.au, it's forum.infinitywarsgame.yodo1.com--so that's the part of the link address to change if you click on an old link and get a failure to load. I haven't tested it, but I hope that replacing that part of the address should get you where you need to be.