Yes strange one. Download at my email addy arrived with a serial & link back to here for file. Had to force dl from here. Installing says 10.4.0, but end result will be 10.3.0 Now to get to the barf part. I too read the msg about 1 PC only, and that one has been used when tried the serial. Notice the dl .zio has an enclosed .txt with same serial. So I kept MY addy in that line (not SOS) and serial line was blank and 2nd paste of serial worked. Run it to see 10.3.0 but works, fwiw. When/if first entry of the serial fails, I didn’t close the install. Just re-paste serial. Confusing verbiage for sure about cancelling the 1 PC issue. Makes you think you have to uninstall after try 1, reinstall for a try 2. Maybe works but not way I did it. Interesting poster pointed out that watermark can be purged by same app which is likely to happen with simiar apps on the mark too. What’s that saying, any lock is picked.