I see no instructions on the KYC procedure - presumably there will be an update soon?
Also, will those excluded by residence for the new campaign but who participated in the old campaign be allowed to continue with the new campaign?
Information on how to do KYC will be available at the end of the campaign. It will most likely be done through the bounty portal.
For continuing, unfortunately no - US citizens won't be eligible there. I know that this is disappointing, but if we're to remain within the law, we have no choice here.