It's no longer a legal requirement to wear a face covering on public transport in England, Scotland or Wales. We do encourage you to wear a face covering in crowded spaces, if you can. For the latest travelling safely information for England, Wales and Scotland, see our Coronavirus page.
You don't need to worry about updating the app if your 'Automatic App Updates' are turned on. Your app will update automatically.
If not, you can just visit the App Store to update it.