I have a Linden home but my friend cant come in.

[LoveAngeL Lyre]

At first noone else can open your Linden Labs house's door except of you. If someone isnt able to come at your house (land) means that you have set your land to your group and also you allow access only for the members of your group or there is another restriction. By the options of the land (last tab called Access), check that the command "Allow public access..." is activated. Uselect everything else there.

[LoveAngeL Lyre]

At first noone else can open your Linden Labs house's door except of you. If someone isnt able to come at your house (land) means that you have set your land to your group and also you allow access only for the members of your group or there is another restriction. By the options of the land (last tab called Access), check that the command "Allow public access..." is activated. Uselect everything else there.

[Sylvia Tamalyn]

If I remember correctly, Linden homes have a door lock feature that you can access from the control panel near the door. You might want to check and make sure that  your door isn't locked.

[Monti Messmer]

Hi, not entirely sure but some are set to - Payment info on file - or maybe - adult-  too ?