It should be the case that it's a case of nothing to see here as the vote structure would usually simply be 'Yes' or abstaining and it would remain open (up to 28 days) until it either gains enough support at which point it passes )if within the 28 day period) or fails (at the end of the 28 day period). To make it relevant you could intend to abstain but later change your mind to voting 'Yes'.
But because they added a 'No' option to speed up voting, does that actually change it from how it works normally and therefore 'No' votes count as a rejection rather than abstaining.
Equally, does the email from Dundee asking to disregard their vote which had not yet been received * then negate that if it does.
I find this part of the petition very interesting, the rest of it not so much.