i want to leave from the premium membership

[Maveryck Breen]

i want to leave from the premium membership , i follow all instruction but it is impossible to abandone the land because there is no space to select ground in premium home.

This is very frustrating

[Rolig Loon]

If that's all, it very easy.

1, Stand in your house.

2.  Pick up all your stuff, one item at a time, and put it back in your inventory

3. Select World >>> About Land >>> General

4.  Click Abandon Land

5.  Walk away.  You no longer own the home.

[Lindal Kidd]

Rolig has given you the simplest answer.  However, there are at least three other ways to select ground that's obscured by prims.

1. Use the De-render feature of some viewers like Firestorm to temporarily make the prims seem to disappear.
2. Use ALT and the mouse to move your camera down under the floor, and then right click the ground
3. Use the Advanced/Highlight and Visibility/Hide Selected command.  Select the floor prim, then right click the ground.  The prims will reappear, but it's too late...the context menu is now open and you can choose About Land.

[Daisy Brune]

Just go to the objects on the land and return everything to yourself.  Then you're able to abandon the land