hi
when you set Group Limit in the setting to for example 5 and then in the front you can set 10 add rows but after save additional field values will be deleted. maybe user add 10 rows and he can add more than needed and fill it and after save some of fields value will be lose.
this is result in cb demo:
NOTE: can you edit my post? i can see the images in the edit mode of you editor but they can not rendered .