OK, a couple of things before the screen shots: 1. Is the script working with compendium-created monsters? And you have set its defaults to the D&D 5th Edition by Roll20 Sheet? 2. Does initiative get added when you press the button on the sheet as opposed to using the script? Does it do this for both compendium and created monsters? If all of these are "Yes", post a view of the character sheet page for an NPC monster. We can go from there. If I can't see anything, this may require an invite to your game. If so do not post an invite link in open chat, just PM me. But lets see what we can see, first.