Unable to use new version

Pop up comes up telling me the version I have is out of date and to check the App Store. Update to new version. Pop up still appears. Unable to use app or get around pop up. Tried a phot restart. Also tried deleting app and redownloading. Problem persists. App is no longer usable despite having the most up to date version.

Jallu79 about Pacific Blue Cross Mobile, v2.6.2