>Interestingly enough I have now received email notifications from replies in other threads, one at 4:46 pm and the other at 6:46 pm. But I have not yet received notifications about replies to my messages in this thread. This is really weird.

Maybe something was in effect for a certain period of time as a precaution measure. In that case, it was legitimate as those emails were clean. But, the fact that six of them were sent at the same time might have caused some precaution measures to take effect. In any case, I would be curious to know if you receive this one.