For details about getting the latest version of the eBay app for your particular Android operating system, see here:
https://community.ebay.com/t5/Android-App/Android-app-not-supported-on-older-systems/m-p/30652449#M9...
Make sure you have the latest version of Google Play Store and Google Play Services. If you do not, you may not be able to get the latest version of the eBay app until you update those.
