I thought I had this issue too - I work in IT so I was rather surprised that I just couldn't work out how to generate an exclamation mark or question mark needed for my wifi password. So, hopefully this post will help others out...
I was setting up a brand new Roku Streaming Stick+. It displays a keyboard with letters and numbers and has two options to select non-characters. The first one is labelled "!?#$%&" yet none of those chars were appearing. Eventually after some frustration I realised what was happening! My first chars were caps so I'd clicked the "Shift" button (a square box with an up arrow) and that was still active so I was seeing the shifted-set of special chars, not the basic ones.
