Jetpack cannot connect now?? (wampserver, wordpress, jetpack)

i have two actual sites i’m developing, and a plethora of wordpress.COM sites (unrelated to my two, actual sites)
When i was setting up my 2 sites i used wordpress and wampserver. i somehow got malware in my computer, so i just deleted 100% everything (including my sites’ data – i had enough sketches(yes, real paper!) to quickly re-develop them)

after removing everything, installing wampserver, installing wordpress, creating my two sites on my localhost, i began rebuilding. i got all of my actual content (posts/pages) back in-line on my localhost. i just went to do some final ‘tweeking’, and when i went to activate jetpack plugin on my two sites, NEITHER of them will let jetpack ‘connect to wordpress.com’.

I cannot even recall this connection being required before, but i certainly had jetpack up and running/active. what are the first things to look for here? sql users/databases? am so confused!!