Our downloads site is now operational and stable again
You can get all of our builds from https://spongepowered.org/downloads.
Our Javadocs site is still down
You can download 1.12.2 API javadocs from https://www.spongepowered.org/downloads/spongeapi/stable/7 (use your favourite decompression program to extract the javadocs jar).
The direct links have now been removed, please get your builds from the links above. The explanation of what happened remains below.
A Slightly More Detailed Explanation
As you may be aware, we are currently experiencing major issues with the Downloads and Javadocs sites. While we thought that the underlying issues would be quick to fix, unfortunately the problems go much deeper, requiring our infrastructure team to set aside a large block of time to fix the issues and restore everything to working order. As we are a volunteer project, and they too are volunteers, this does require them to fit this in around their other commitments, which is why this has taken longer than everyone would like. Rest assured, they are working on it!
The good news is that all of our downloads are not gone! For plugin developers, Maven still works as usual, so using the API in your project as we recommend will still work. It is just the website that is misbehaving - hence why you might now be on this page!
We are working on it and we hope to get it back soon so that you can also download other releases as required. We thank you for your patience and apologise for any inconvenience caused.