Omigoodness
, I didn't realize you were using PSP2019. I have only seen pictures
of the newer versions of PSP, so I have no idea how they work. I'll give you instructions for how PSP8 works and hopefully your version will be the same or similar.
This is a screenshot of the layer palette at step #8 just after duplicating the Outline layer and renaming it "White". As you can see in the screenshot, I have both of my vector layers expanded. To expand a vector layer, click the + symbol next to the layer (this will expose the sub-layers).
To edit the White layer you need to click the sub-layer to highlight it (the sub-layer will appear in bold type when it's selected). Once the sub-layer is selected, right-click and choose Edit Text from the flyout menu. When you do this the Text Entry box will open and you can change the materials and other text settings.
Crossing my fingers that PSP2019 has the Edit Text option
LOL.
For your Welcome to the Group results just above, it looks like you omitted step #22 which is to select the black area and delete it. Perhaps you thought you were clicking in a black area and you weren't. That blackness is not supposed to be there, unless you like it, of course
.