Really happy for you man, as they say were there's a will, there's a way... However like you say there's now a cost involved - A lesson for all if you want an ebike save up double what you need and you'll be covered, I am now saving up for, which I was originally saving up for, a new bike when my motor packed up - remember an ebikes not just for xmas lol
Before you order your new display and I am just speculating here but unscrew it first, it might have a memory battery in it say a CR3032 it might have just died!