Handling IP Geolocation Conflicts with AWAF for Internal LAN Addresses

I want to publish an application behind AWAF with restrictions on certain countries. Unfortunately, I have LAN addresses 18.0.0.0/8 and 19.0.0.0/8 within our network. My AWAF geolocation settings block these IP addresses because they are recognized as being from unauthorized countries. If anyone has encountered a similar issue, could you help me configure these IPs as 'private IPs' or suggest a workaround to handle requests coming from these IPs?

FYI: the network team don't want change this LAN.