I don't think we kinked or cut any wires, but my husband wasn't sure he'd installed the jacks/connectors correctly.
Is there any way to check the connection from upstairs to the hub without lugging a computer upstairs & plugging it in?
They make test tools to check the integrity of the connections. Not sure the cost or where you can get one.
A few more questions though. Is the wire a straight shot? Meaning jack to jack no splices or stopping points?
What type of jacks did you use? Do the wires screw down or are they pressed in? If they press in make sure they are fully pushed in and the sheath is broken where it's pushed in so there's good enough contact. Also check the colorcoding. Brown striped and orange striped get confused all the time.
But check each patch cable first. If this all pans out then there is no obvious problem and it'll be a little harder to troubleshoot.