Thanks - I was recently looking for that database as well, so it will be great to have it back online!
On a related note, it looks like the new site has a very limited selection of recent builds available (http://releases.naturalcapitalproject.org/?prefix=invest/), and no versions of the user manual from previous versions? With an living, online manual it’s important to have older versions still accessible as reviewers make assumptions/have questions about the models that may have changed in the most recent versions, so it’s problematic if the old versions are inaccessible. In my case I’m fairly sure that the section on selecting threshold flow accumulation values for the SDR model has changed, and I’m trying, currently without success, to find how this was described at the time I ran my model using InVEST 3.3.3. Thanks!!