Compatibility matrix Elements Connect - Elements Copy & Sync

Here is the compatibility matrix between Elements Connect and Elements Copy & Sync field

Connect 6.0.0 +Connect 5.13.x -Connect 5.14.0 +
Copy & Sync 2.18.0 +(tick)(error)(tick)
Copy & Sync 2.17.x -(error)(tick)(tick)

Make sure you are using correct versions to make Elements Copy & Sync field mapping work correctly with Elements Connect custom fields (thumbs up)