Thank you very mcuh Ryan, I did according to the instruction and now, when I click jetpack, I got the messages: In Development Mode, via the JETPACK_DEV_DEBUG constant being defined in wp-config.php or elsewhere.
I suppose this is it, I enabled the development Mode. right?
Thank you very much for your prompt reply!
I am building the websites on localhost.
I checked somebody’s post, tried to deactived all the plugins except jetpack, it didn’t work
