I haven't thought of Joyva Halvah for years. My grandfather claims that he almost married the halvah princess of Brooklyn so she must have been a Radusky as that was the family that started the business in 1907 in Brooklyn
I checked intrigued and it appears to be out of stock at all the usual sources.
You could email and see if it is being repackaged - the actual business still seems to be thriving and I couldn't find any news of deaths or other disruptions in the corporation