To copy, you just hold your finger on a word until you see the choices Select, select all, and paste. Then you can paint with your finger the highlighted area and then when you finish doing that you lift your finger and it gives the option to copy. You don't need any keyboard options.
However, with WordPress, when I go to paste, it worked on the app, but not the Internet version. And yes, I bet it strips out any special text formatting.
Seems like you will have to either use your iPad and edit for formatting. Or use another computer and paste as a Word document. I am just sure I have seen some of the experienced colunteers warning about the hazards of using Word, but not seeing those now. Even when I follow links that are supposed to go to a support document ostensibly on pasting ffrom word, it reports a document not found.