Adding and Editing Text

Hello,

I downloaded the mobile verison and desktop version of Adobe Rush.  On both the mobile, and computer versions, I can't edit my text.  I have a samsung mobile (it is compatible with my os), and it will let me select the text I want to use, edit the font, boldness, etc., but I can't actually add my text in the box. 

For example: I can select add graphic and select the text I want on my videos.  It will add the sample text on the screen, but absolutely will not allow me to edit the words of the text.  All I can see is "Title" or "Title, subtitle."  I try clicking on the box, double tapping....nothing works.  If I want to bold, choose another font, or italicize something, it will let me do that, but nothing else.

I paid for the monthly subsciption thinking that would help, but it doesn't.  I then added it to my computer, but am still having the same issue. 

Can anyone help?