I am having the same issue. Jet Pack works great on my business site, but will not certify on my personal website. This is the message that I get
nvalid request, please go back and try again.
Error Code: invalid_request
Error Message: Mismatch in redirect_uri.
It was working just fine until the last update so I don’t know what has happened or what changed to break it.
I ran some connection tests on your site, and everything seems to be working properly. Stats are recorded and appear here:
https://wordpress.com/#!/my-stats/?unit=1&blog=9540203
if you still see the error message in Jetpack > Site Stats in your dashboard, could you reply to Richard’s email with some information about the WordPress.com account you used to connect Jetpack?
@amytippins Your problem seems to be different; could you please start your own thread, as per the Forum Welcome?
http://wordpress.org/support/plugin/jetpack#postform
Thank you!
I went and moved the site to a new server and that seemed to allow stats to work again.. So something in the update did work well on that old server but is fine on this new one.
I noticed that the http connection test in the jetpack troubleshooter plugin thing didn’t work for a SSL connection so perhaps that was/is what was causing the failure. If so jetpack needs to fallback to std http connection.
Thanks again for all the help on this.. I do appreciate it greatly.
