Well, season 2 of Freedom Fighters: The Ray was released on CW Seed back on July 19, but apparently nobody bothered to publicize it, since I only just found out about it today, and I just finished watching it. Actually they now have both 6-episode "seasons" recut into two big episodes a bit over a half-hour each.
I was hoping that the makers of season 2 would make some effort to reconcile the discrepancies between season 1 and Crisis on Earth-X, but unfortunately it just compounds the problems. The Ray is recruited by Green Arrow, Flash (who sounds nothing like Grant Gustin), Vibe, and Mr. Terrific, who "train" him on a random mission to fight a giant robot alongside Vixen; this definitely contradicts Crisis, in which they'd never met before. Also, Ray tells Cisco about the Nazi Earth, which he didn't know about in Crisis. The "Black Arrow" here (who shares the same voice artist that's imitating Amell as GA, so presumably he is meant to be Oliver Queen) is subordinate to Overgirl rather than being the Fuhrer, and there's a mention of a different character, a Chancellor, who's the leader of the Reich. Also, the Ray is shown to rival Supergirl in strength, which doesn't seem consistent with his portrayal in Crisis. And the weirdest, most random inconsistency: The animators assumed for some reason that Mr. Terrific can fly. Even in the comics, he can't do that.
So I think we have no choice but to conclude that FF:TR is non-canon to the Arrowverse, despite being supposedly set in it. That would make Vixen the only one of the three animated webseries that actually is in continuity with the Arrowverse (aside from a couple of minor details).
Aside from the continuity problems and the bizarre casting of ringers for Flash and Green Arrow, I can't say I cared much for the story either. It just meandered too much, and it would've been better without the Earth-1 superhero cameos. The most important parts were Ray contending with his life on Earth -- both his efforts to fight for his social work and his struggle with coming out to his parents -- and his adjustment to Earth-X and winning the trust of the Freedom Fighters. Both of those were underdeveloped because of the time wasted mucking about with the routine superhero-origin stuff and the gratuitous cameos. There were enough cameos with the Reichsmen doppelgangers, so they should've left it at that and spent more time on the important parts. As it stands, though, this is mediocre and unfocused, though it does have some effective moments. The acting and animation are both pretty stiff, too, although Melissa Benoist is pretty impressive as a cartoon supervillain.