I'm a little worried by your clear familiarity with Nazi regalia trivia, and the strange resonance of your 3-character username with the name of a certain now-defunct/mid-20thC Herman party of misrule. . . . . .Particularly in low budget productions SS officers will have the correct collar badge for their rank but the shoulder straps will be one rank higher (e.g an obersturmfuhrer with the two pips of a hauptsturmfuhrer) or vice versa - possibly due to skimping on technical advisors who know that the pips were changed post-war (to unify with other NATO armies, was it? - one pip for a junior lieutenant, three for a captain, etc... Or to distance the new military from that that fought the war?).
Also, addressing an SS officer or NCO with the Wehrmacht-equivalent rank when using German titles or German speech for German parts - possibly due to use of Nazi things being banned in Germany...?