Created a list in OmniOutliner (5.0.4 (v181.16) on Mac (Sierra 10.12.05) It won't show up on iPAD Mini 1 (9.3.5) OmniOutliner V (2.9.6)

I can’t seem to sync Mac Sierra !0.12.05 with iPad Mini 1 on OS 9.3.5, is it me doing something wrong or is it the hardware, i.e iPad Mini 1 with a Omnioutliner Version of 2.9.6?