Connector nodes not appearing on some elements + one more question

I am a student in a web design class. I would like some help, please.

Why are some of my connector nodes in prototype mode not appearing? Please see my screenshot’s red circle what I mean. As I hover over some of my graphics in prototype mode, the nodes do not appear. How do I make them appear on the graphics/text elements?

Also, I am trying to make 3 prototype flows, how do I create separate flows for each flow?
Thank you for any help. Much appreciated!

Hey there, sorry for the confusion!

You need to select the element for the + icon to appear to create a new connection.

To create a new flow, you need to select the starting Frame then got to Flow starting point in the Prototype tab and click the + icon to create a new flow.

More info here: