The test version is available. Please note it may has bugs. Any feedback would be greatly appreciated
iOS: https://testflight.apple.com/join/8XEBMu8T
Google Play: https://play.google.com/store/apps/details?id=xyz.goodcloud.glinet
Surfshark’s WireGuard key is valid for 7 days, if the key is invalid, the WireGuard configuration is invaid too, so you need to update it from time to time. You can see the expiration date of the key in the Surfshark Account page of the app. When the expiration date of the key is less than 5 days, it will be updated automatically when you go to the Surfshark page. When the expiration date of the key is less than 24 hours, a notification will be sent to remind you, and you can turn off this notification in the Account page.
Below is the Surfshark account page,
Below is the Surfshark page.