If you were invited to a Team Space but you are not seeing it on your dashboard, you might be looking at a Brand under a free version. All you need to do is switch Brand or Team.
In the web app, go to User Profile and choose Default Brand under your paid plan.
Or in the mobile app, tap the Brand circle icon on the lower-right part and tap Switch Team. On the drop-down menu, tap the right Space under the paid plan. Then go to the Design Feed and tap the Space Menu in the upper-left corner to check if they are in the right space.