When viewing the tutorial for text on a path, a straight line is drawn, and text added to it.
I can achieve this part.
Then, with the line active, the nodes button is clicked and there is a central node, which allows the ends or centre node to convert the straight line to a curve.
When i click nodes, i only have a single note at each end and cannot distort the line to make a curve.
Hover over the line and hit the “S” key to change the line to smooth. You should then see the node handles appear allowing you to then adjust the shape of this path.