On most versions of PagePlus you can type text "on the fly" by clicking on the Text Tool in the left hand array of tools, the Text symbol is usually a capital A. Then click anywhere on the page and start typing. Text size and font usually show at the top. You don't have to use Insert for text unless you have previously saved text to insert. The alternative is to click on the WritePlus symbol and enter your text that way.
What is ransomware and how do I protect my PC from WannaCry?