Hi Everyone. This is one of the best threads I have read through. I have the 12.5” and 9.7” Pro models. I purchase the keyboard for both. The 12.5” was purchased when it came out. And used extensively until the 9.7 came out. At that time I purchased that model and keyboard. About 1 year into the use, it started having the same problem everyone here has been facing. It would connect 4 out of 5 times and progressively got worse. Last month it got to a point where it wouldn’t even function as a cover. Meaning I couldn’t even use the iPad with out this error message. That’s when I found this discussion. Here is what I learned:
1) There seems to be a weak connectivity issues in the keyboard. Hence people using the Magnet between the 1 & 2 keys.
2) Software update to 11 has made it worse. Not sure what the change is, but it seems to push the error message.
3) Apple has admitted to the failure and extended to a 3 YEAR warranty.
I believe the release was in Feb 2016. So, anyone with this problem has ample time to get it replaced at any Apple store. I went this morning and had mine replaced with a new one. Purchased in May 2016 and they still helped me out. Don’t wait like I did. Go to Apple and they will replace it no questions asked. Good luck to everyone.