64 bit Android dllnotfound

When I switched to the required 64 bit support for google play, the SDKBOX review plugin didn't work anymore. I used adb logcat to log my device's output and I got this

This problem only arises when selecting the arm64 architecture. The path to review.dll is

 Assets/SDKBOX/review/Editor/review.dll

Anyone else got this problem and knows how to fix it? Is this a Unity bug or did I something wrong?