BGES No Email doesn’t stop Buddyboss group emails

I have a client reporting their group members are still getting individual email updates on groups where they have selected “No Email” as an option. They then have to instruct the members to go to the Buddyboss Notification Settings and disable the following in the Social Groups section:
– New post in a group you’re subscribed to
– New discussion in a group you’re subscribed to

How do we have the No Email option truly stop Buddyboss group emails?