Access 2016 (365) Combobox problem

Hi Richard,
Creating a combobox is something I was familiar with way back in the 2010 lessons, even related combos.
My Access (365) 2016 version confronts me with a weird problem I don't find an answer for.
I even rebuild the tables and form. Made sure the field used in combo have the same property settings.
ThemeID = autonumber in ThemeT and ThemeID in BibleVers = number.
Still when I try to create a combo all goed well untill the question "save value in tablefield"
Acces does not show all fields in the table.

What do I miss in this? What is changed in Access 2016?

With kind regards