Yeah, and that's where the issues and red flags are... the history as presented.
The system is claimed to be founded by one Paul Arel, who the blurbs constantly describe as "legendary", "world renowned", "the internationally highest authority in (their own martial arts)", and so on. What is noted is that he is seemingly only "legendary" and an authority in the martial arts he created... okay, not completely unusual to get some hyperbole there... but it's when we get into the actual history that it gets rather more suspicious...
Paul claimed to have begun his training in 1950 in Massachusetts, under the tutelage of one "Sudo Sensei". Sudo taught Paul "a small family system of jujutsu", with no further details. Apparently, when Sudo returned to Yokohama in 1958, he left Paul in charge of the dojo teaching this unnamed art, and that's seemingly where the contact ends. He enters the Marine Corp, and learnt many other arts "under various Oriental masters", with the first defined actual study and rank being the study of Kyokushin karate under Mas Oyama in "the early 60's". It's also stated that he competed (successfully) in both judo and karate tournaments... without any mention of studying judo...
I can go on, but the real issue is this "small family style of jujutsu" without a name... that's just simply not how classical arts work. That, alone, has me dismiss this as inauthentic. Combine that with some issues I've noted in some of the videos (interesting and unusual methods of some throws etc), and I'm more than hesitant to recommend this group. That said, the karate basis is likely legit, and if you enjoy it, great... but it's not likely to be what it's advertised as...