Add-ins fail to run

Hey,
Just downloaded Office Tab x64. The installtion was successful, but the add-ins do not autorun. They are in the list of inactive add-ins in Word, I try to activate them, but the changes do not hold -- the next time I check they are unclicked again. What can I do to have them autorun? I have MS Office Professional 2016,  Windows 10 x64. Word cannot see location to the add-ins (empty line).  
Thank you!