Hello! We’re updating the SendPulse CRM Public API to streamline your CRM system integration experience. These changes apply to contact, company, and deal attributes of the "Date and time" type. Previously, you could only enter dates in the 2025-01-01 format. From now on, when creating or updating attributes of the “Date and time” type, you need to use the Y-m-d H:i format — for instance, 2025-01-01 12:00. Starting June 7, only the new date format will be supported. | 
