Rated 4 out of 5 stars

He probado sincronizar contactos y sus grupos, desde mi cuenta GMAIL e ICLOUD y he comprobado que los grupos no los sincroniza. En mi cuenta GMX si los sincroniza.

This review is for a previous version of the add-on (21.1).  This user has other reviews of this add-on.

for Google, this is a known bug : https://issuetracker.google.com/issues/36761530

for Apple, this seems a new behaviour...