I tried the addon with the file you sent me via e-mail a week ago. The roads were imported if the Import roads and paths checkbox was checked. You can check OSM tags in the custom properties of the selected object. Buildings from your OSM file doesn’t contain any height information. However I ignore height information even if it is provided, since I consider the addon as auxiliary tool for further modelling. You can use Thickness import setting to get all imported OSM buildings extruded.