The Product metrics marker field (zvod_Child_Account_Ratings_vod) does not work on Child Account page in CRM Windows
For Product Metrics, CRM Windows is matching the Child_Record_Type_vod__c field in Child_Account_vod to Applies_to_vod__c field in the Metric Configuration object. However, the user has no Field Level Security (FLS) to Child_Record_Type_vod__c.
Grant the user FLS for Child_Record_Type_vod__c of Child_Account_vod.
CRM Help Documentation: Product Metrics for Child Accounts