Instagram problem

Is anyone else having problems with Instagram? For a week now, the text box, where you type your comments, is covered over, so that I can’t see what I’m typing. Any misspelling or predictive text can’t be seen until I’ve posted it and then I have to go back and edit it. It also means I can’t copy and paste to put on other sites because I can’t see what I’ve typed. It’s really annoying! It’s only happened recently - does anyone have any idea how to put it right?