Dear Natalie,
Collect Earth desktop ( https://openforis.org/) is fully functional and updated (latest version is from just last month). While it is true that it has been difficult to keep our documentation updated in the last years (apologies for the very outdated reference to Fusion tables) you can find guidance using this GPT: Collect Earth Assistant
Important to note when you start designing surveys for Collect Earth is that you should design this surveys through another Open Foris product called Collect (survey designer) : https://openforis.org/solutions/collect/
Once you download and install Collect you can start it and go to the survey Designer -> New Survey . There it is important to use the template called Collect Earth, if you are going to do a Land Use assessment use the Collect Earth + IPCC template which already gives you a very good starting point to have a working survey with complex validation rules prepared to assess Land Use changes using the IPCC schema ( 6 common Land Use categories and then any Land Use Subdivisions relevant to the assessment under the categories )
Finally, there is a a Google Earth Engine app that helps you to design a grid that is already compatible with a Collect Earth survey. You can access it here, there are videos on how to use it although it is pretty self-explanatory. https://collectearth.users.earthengine.app/view/collect-earth-grid-generator
In any case thank you for reminding us to update the documentation, we will put it high in our TO-DO list!
