You are 100% correct. I made the mistake of downloading version 3.0.0 and it crashed WordPress. I had to go into the control panel and delete EWWW. It bothers me that this site provides no means to download version 2.6.0 which works!!
It is extremely obvious that version 4.0 was never properly tested.
It crashed bigtime. You have no right to palm off this lemon. My cheers to the man who gave the link to download the old version of Checkout Manager.
Why are you so eager to change what works to something that was never properly tested and clearly does not work?
