Got my P4P+ yesterday and started the initial setup and activation process. Everything was going fine until I hit the activate button and got the response that activation failed. I tried numerous times before I contacted DJI chat support. After spending more than an hour with DJI support they finally recommended that I send it back for a replacement. Later in the evening I made some attempts on my own to activate the P4P. I had gone through the activation steps so many times that I was getting weary of re-entering the "name" of my aircraft so the more attempts I made the shorter the name became. The name which started out as Randy's P4P+ was eventually shortened to simply the letter "p". When I entered the name "p" and submitted the activation it was successful! At the time I didn't associate the activation with the aircraft name...I was just happy to have it working. Later at night I was watching a P4P+ unboxing and setup video on YouTube and noticed that the guy had the same problem activating his P4P+...he was trying to name it "My P4P+". After a number of attempts he recalled having a similar problem with his Osmo. He was able to correct it by removing a special character he had put in the name...and it worked. When he did the same thing with is P4P+ it finally activated. The special character he had to remove...and I removed was the "+". Apparently the activation process does not accept special characters in the aircraft name. I am guessing that many owners will probably do as I did and attempt to use some form of P4P+ in the name. If you do this and your activation fails you might try removing the "+" and see if that works.