Solved. .eteks was created automaticaclly during installation at location: ~/snap/sweethome3d-homedesign/15/.eteks/sweethome3d/

Last resort is uninstall and re-install it using the guide you suggested. Before doing that, i was wondering: where should .eteks folder have been created? I checked /tmp and /opt but it seems I find nothing.

Hello, I installed in Ubuntu Sweet home 3d Version 6.6a through Software catalog.

Then, under home folder, I created:

a folder called .eteks
a subfolder called sweethome3d
a subfolder called plugins

I donwloaded this plugin https://sourceforge.net/p/sweethome3d/plug-ins/39/ and copied the the ...

Hello, is there any feature that allows me to drag the 3D model of the house you've realized? At the moment, to my knowledge, I can only zoom in and out and rotate the model.