This means you need to create your Collaborative Space. Don't stress! It's easy.

Use the compass to locate the 3DSpace app and then click on the little arrow next to "My Collaborative Space" to actually create your Collab Space.

Still have questions? Check out this wiki post: https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/#community:AH6Out1lTB2kjqDkm0S-Qg/wiki:li2FngaqQJO37NbqNodC2w