If you translate the pop up box, with bullet points so somebody can read it against the image, you might be in with a chance.
Otherwise, if you've not got much data at risk ... any dates should be stored on the cards, not in the powerup ... you could unload the app, and try using Big Picture, its a gantt chart powerup, free if your board is in a group (doesnt need members, just needs to identify it as a group board).
Make a copy of the board in your workspace thought, use the DUPLICATE BOARD function, and name it BAK COPY & DATE-TIME so you know.
Hello friends! From the community that brought you Welcome Wednesday, Throwback Thursday and Friday Fun, welcome to Taco Tuesday, a weekly discussion about all things Trello. The best part? One Tac...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events