Hi,
Battle.Net downloaded an update this morning; the new version is 2.30.0.14752. To verify the version number of your Battle.Net, click on the blue Battle.Net logo in the upper left corner of the App and select Settings from the menu. The version number will be in the bottom left corner of the Settings panel:
We had a similar problem last month where Battle.Net wouldn’t update itself like it’s supposed to. The solution was to manually update Battle.Net – i.e. download the new version from https://download.battle.net/en-us/desktop .
You can refer to this topic for details:
Edit - 23 March 2024: A new Battle.Net update dropped this morning; the new version is 2.30.1.14758