Yes I guess that is because your ROM is using FBEv1 and this Orangefox is using FBEv2 as decryption method.I can boot all three version of the recovery, but it seems none of them can decrypt data. The Data partition dimension is 0mb.
Anyway, is the first time I use orange fox, and i don't know it very well....
Then I guess you have to wait until another Recovery for FBEv1 is available.
I know someone already build Orangefox with FBEv1 but that is not ready yet to be published I guess.