Bunnymally The links all work fine for me: they point directly to the relevant download pages on the NRaas site, nraas.net. The ModtheSims link works too, at least on my end, but if your browser is objecting to it, NRaas also has an install guide for mods:
https://www.nraas.net/community/How-To-Install
If your browser doesn't allow any of these links, try a different one. I know for a fact that downloads at NRaas are still in full working order because people report outages on the site whenever they happen, which is very infrequently.