Lock Manager Port

I know we have a lock manager coming to Hubitat soon so may not be worth the discussion but I'm curious if anyone else has tried porting this Lock Manager from ST ([RELEASE] Lock Manager - Community Created SmartApps - SmartThings Community) ? I was able to get Device Handler ported with minimal changes and the app and all child apps properly "saved" without any changes. When I actually go to load the app and configure the inputs everything seems to take but the app never actually loads and inputs aren't saved. The logs aren't showing me any errors.