Interaction features like buttons and Object Sates stop working after first interaction.

Hi everyone,

My quesion is to those who know well interactive inDesign features.

I am working on Epub book and I've set up some buttons that trigger an animation and buttons that navigate Object State gallery. My problem is that once I go through the viewing process once, everything stops working. The features are no longer clickable until I reload the page by going to next page and comingback to the page in question.

Really hope that someone can help me to figure this out.