I just downloaded ODK and the most recent Java on my mac. ODK won't let me select the Validate converted XForm with ODK Validate (Requires Java) option.
Macbook pro running macOS Mojave version 10.14.6
Reinstalled ODK, restarted ODK, reinstalled Java
Welcome to the ODK forum, @Austin_h ! We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a real picture as your avatar because it helps build community!
Do you need to use an old version of XLSForm Offline? Your screenshot shows
v1.9.0 and the current version is
v2.0.0. If you need to use
v1.x then there is a
v1.11.1 - all releases are available at https://github.com/getodk/xlsform-offline/releases
With XLSForm Offline
v2.0.0 an macOS running
10.15.1 I had no issues.