This library So file is not available in 64 bit, please help with new support.  

However this libraries are not 64bits. Libraries are coming from other repos that are not maintained any more. In order to get rn-openalpr working with 64 bits somebody need to compile new libraries. We need this library in 64 bit can you provide us to make it compatible with Playstore? 
Reference link: https://developer.android.com/distribute/best-practices/develop/64-bit