Thanks.
I'm feeling a bit dumb because when I checked my options seemed to be Uninstall or Open.
Last updated 30th April 2019.
Did you uninstall then reinstall?
Edit: Version 2.3.0
I think I saw the same and had no update option.
So I uninstalled and then installed the new version.
I had no data in LibreLink (I don’t use it much) so had nothing to lose.
Actually, if I remember correctly, the data is stored in the cloud rather than on your phone; that’s how LibreView accesses it.
So there shouldn’t be any data loss if you uninstall and reinstall as long as you connect to the same Libre account.