Thanks yossi. Just to understand, what does having or not having a successor have to with being or not being Moshiach?
Also, are you saying he was only pegged as Moshiach (which already was being said during his lifetime) after it was obvious he wouldn’t have children? A previous poster on this thread said he was in the Lubavitch Yeshiva 50 years ago and they were already calling him Moshiach back then.