The best source for liveries for the FlyByWire A32NX is FBW A32NX @ flightsim.to.
These liveries are especially made for the FlyByWire add-on. The default A320neo liveries do not work with the FlyByWire add-on any longer.
In version 3.0.0 of the FlyByWire Installer, we removed the capability to convert outdated liveries. More often than not, this caused conflicts or support issues with these files in your
Always Keep Liveries Up-to-Date
Our recommendation is to download the dedicated FlyByWire liveries and also to keep the liveries up to date by regularly updating, especially when a patch to MSFS is released. This is important as liveries are one of the main causes for issues and CTD (crash to desktop).