Currently, the WireGuard app for Android is removed from Googl | Xeovo VPN

Currently, the WireGuard app for Android is removed from Google Play.

Google says it was because WireGuard violates their "Payments
Policy", presumably because they have a link inside the app that opens
the user's web browser to the WireGuard donation page.

Most likely it will be added again after manual review. Meanwhile, we strongly recommend to get an alternative store F-Droid and download the latest version of WireGuard.