Easy AR SDK 2.3.0 is not supports the ARMV64 architecture. so you can't upload the app which was made by the Easy AR 2.3.0 ( version 2).
you need to go for the Easy AR 3.1 version. in this we have ARMV 64 architecture support.
Unity Build Settings
Unity Version 2018.3.10 or above
make Script Back End : IL2CPP
select the boxes of ARMV7 , ARMV 64.
you should have download the Latest NDK
make the Android studio update(Upto to date)
make the apk and upload to the play store. u won't get any erros.