I had this issue too. What I did to solve that, was downgrading the version of jetpack, then I was able to login. Then, you can upgrade when login. Also, maybe the problem is the adblockers, try with a browser with no adblocker.
To fin releases of jetpack, google: Jetpack changelog
Thread Starter
osmor1
(@osmor1)
No, I don’t understand, nor agree. There is no solution, no support from yoast, no support from plugintheme, not support here? wtf??? Who can help????? I need a solution.