We’re sorry to say that the Air Display Host software does not yet work on macOS 10.13.4. In an email to Air Display users, Avatron wrote: However, the problem doesn’t affect secondary displays that connect directly to the Mac via Mini DisplayPort or Thunderbolt. MacObserver says the products affected include the hardware-based DisplayLink, along with the app-based Air Display, Duet, and iDisplay. We’re hearing reports, such as this comment from Dana Stevens, that the recent update to macOS 10.13.4 High Sierra is breaking third-party dual-display systems (see “ macOS 10.13.4 High Sierra Adds Business Chat and External GPU Support,” 30 March 2018). #1577: iPhone 12/12 Pro repair program, fix corrupted Chrome extensions, iCloud Mail custom domains, Chipolo AirTag alternative, 10-digit dialing changes.#1578: Apple delays CSAM detection, upgrade Quicken 2007 to Quicken Deluxe, App Store settlement and regulatory changes.Apple lawsuit decided, Internet privacy limitations, combine Mac speakers #1579: Apple “California Streaming” event, OS security updates, Epic Games v.
smart displays, iOS 12.5.5 and Catalina security update, iPhone 13 problem with Apple Watch unlocking