@rog7254 Thanks for getting back to me! Although you were trying to save the settings and you got the error, when you later visited the same settings, was what you were trying to save, showing as the proper settings now? I wanted to establish if it was doing as your screen recording showed, or if maybe that was a one time thing.
All in all, since you still cannot get this saved, I recommend giving our support team a call here. Feel free to let me know how this goes!