Oh dear... I thought I might have found a solution to my OpenVPN Connect (v3.2.4) crash at start-up on two old Android 4.4.2 devices... The description of the stated version suggests that it supports Android 4.4+ but the app crashed on both devices every time at start-up while working fine on all my other devices running newer versions of Androids from 7 to 11. I therefore wonder a switch to an older version of this app is needed. Hope someone could kindly show some love for older devices. 😐
[2021-03-15 UPDATE]
I seemed to find an app working on my Android 4.4.2 tablet - the OpenVPN for Android open-source app by Arne Schwabe. I somehow missed the official introduction to it at
https://openvpn.net/vpn-server-resources/connecting-to-access-server-with-android/. It doesn't crash at start-up and worked well so far on my old TV box. If you haven't tried it, give it a go! 😉