Hello, this is a support case built off of the email chain with Nolan.
Ok so got the end of the story, your Kodi does not return episode duration or stream details or anything that show the duration of the episode.
So Yatse can’t display a percentage from the resume point since it require the duration.
When you play from Kodi, kodi set a duration value and then Yatse can do the calculation. Not much I can do on my side.