When i am giving the due date on any invoice for 14 days but after saving its going to 30 days

Hi seastoneconcrete, 

It sounds like your Sales settings may be set to Net 30 by default. To confirm or edit this: 

• Select Settings 
• Choose Account and Settings 
• Navigate to Sales 
• Select Sales form content 
• Choose Preferred Invoice Terms and select your preferred Terms from the drop down list
• You can also add new Terms 

Please let me know if you have any other questions. 

Thanks, 

Rebecca