Can anyone help me figure this out.

Here are my settings:

Modifier                                               Primary Stat    Fixed Value  
Bonus - Unarmored Armor Class                                        3              
Ignore - Unarmored Dex AC Bonus                             
Bonus - Unarmored Armor Class         CON                   
Set - AC Max Dex Modifier                                                    0             

Here is what I am seeing on the character sheet:

You’re making it too complicated. You only need two modifiers to do what you want:

• Modifier: Bonus->Subtype: Unarmored AC->Ability Score: Con->Fixed Value: 3
• Modifier: Ignore->Subtype: Unarmored Dex AC bonus

After you save the modifiers, you MUST re-save the entire Homebrew using the main [SAVE CHANGES] button under Basic Information. It can take up to 20 minutes for those changes to push through to the character sheets.

Thanks!