Is DiscLabel compatible with Mojave?
Mojave is the fifth macOS upgrade since we last updated the DiscLabel app. Development has been discontinued, so when macOS no longer supports 32-bit apps, DiscLabel will no longer function. You'll notice this since macOS 10.14 (Mojave) gives you an alert when you launch DiscLabel.
Your best bet for using DiscLabel reliably is to install it on a machine that runs Yosemite (10.10), or ideally, Mavericks (10.9) which are the latest versions of macOS where DiscLabel is supported.