You have apps installed as "enterprise apps" - i.e. it is not apps installed via the App Store, via TestFlight or directly from Xcode as a developer. Enterprise app installation is supposed to be used only by enterprises installing their own custom apps on their own devices - it is not intended for public distribution.
In order to verify these apps, you'll need to have a working internet connection, and especially you must have unhindered access to https://ppq.apple.com Apple Support
However, it is not enough to have a working internet connection. The enterprise distribution account with Apple that was used to sign these apps must still be valid (i.e. subscription paid) - and the enterprise must not have revoked these specific apps.