Old version of webview on Android device causing problems

I have updated the android system webview and google chrome to the latest version via the google play store.
However my app states the following userAgent:

Mozilla/5.0(Linux; Android 6.0; C72 Build/MRA58K; wv) AppleWebKit/537.36(KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119
Mobile Safari/537.36

This version has an error if I use any plugins and messes up the app styling. Note I am using Capacitor but I think the same would happen if I used Cordova.
Note: I can’t replicate in emulator and I don’t have physical access to the device.

Any ideas how I can update this or get around it?

This is a duplicate issue but I thought I would rephrase the title, see: