Data privacy and worflow rules

Data privacy and worflow rules

Hi, we are trying to create a report with the customers that accepted our consent form, the chat support told me it isn´t possible to do this so what i did was create a field and create a workflow rule that is executed when  Data Processing Basis  is  updated with the condition that the consent is granted, with this condition i update the field i created and this way i can create a report, the problem is that when the customer accepts our policy from the consent form it doesn´t work but if i do it manually with each customer from CRM it does work, do you know why this is happening?

Thanks