2018 Sketchup Pro Trial- not allowing DWG import

Hi, I am trying to import floorpan layouts from CAD to Sketchup Make- after reading that you cannot do that in Make I picked up the trial version of pRO- and am somewhat new to the software. I am trying to import floorpans from a DWG. I have read through other forums and have tried to convert the files to a later year of Autocad as suggested but when I go to import, nothing is available for me to import- like the option to click those CAD files are not even an option. Any thoughts? I have files from AUTO CAD that are from a more recent year and CAD files that I converted to 2013, which I heard is the preferred year. Any help is appreciated

Have you set the import file type to the appropriate one in the drop down.