First things first, have you tried fully closing and reopening The Stack World? This clears the cache, which is sometimes the cause of the problem.
Head into your phone's app store and check for an update - we push out new releases weekly to squash bugs, solve problems and bring you new features, so it's possible you've missed one. While you're there, switch on auto app updates!
Still broken? Sorry 😔- we'll get right on it - please get in touch (add a screenshot of the issue if you can!) and we'll investigate.