I just upgraded to ad inserter pro and tried activating while the free version was activated. issue is, that did not work. I tried deactivation of the free version and that did not work, I tried deleting and that did not work. I went to host admin and tried deactivation and that did not work. I tried deleting and that worked but got a message in plugin file saying as inserter file is missing. I then installed pro version and that did not work and so we are back to I can not deactivate free version and I cannot activate pro version. I am stuck with this issue and I just got the pro version cause of ad blockers that the normal ad block blocker did not work for.