I've contacted them three times ever since, but I'm just talking to my screen. I activated a demo which successfully was deposited in my iLok account, which means that the accounts are actually linked. I tried to reuse the original serial number to reactivate my bundle to no avail.
Either Softube's technical support sucks or I am being treated as a 2nd-rate (un)customer because I haven't actually bought anything from them.
Any similar experiences out there or suggestions?