but the company's website offers no such replacement and I can't find one anywhere else.
You mean the manufacturer's website (does one exist? I don't see one.) or the company you bought it from? Have you contacted 'the company' via email?

This is the problem with buying a vape where the maker of the unit can't be contacted by phone. You wouldn't have this problem with Vaporwarez or Vapor Bros. Of course you wouldn't have a digital display with either of those vapes either. But they'll be going strong long after the display in the UVM has died. I think it's best to keep it simple. Very few of the box vapes with digital have a warranty. The Easy Vape would have been my choice in this catagory, if I absolutely had to have a display. It has a 5 yr. warranty.