Unfortunately, I only see a white screen after switching into react UI. Some had similar issues in the past here, and I got it too in version 5.5.95. Should be something added in the URL to make it work? BTW, no errors or warning in the chrome console.
Just to confirm, are you using the self updater? or the release.zip to install the application?
Can you DM the link to your application please? I’m not sure how Cloudron bundles Invoice Ninja. There may be a platform issue.
I’ve sent you a DM with the link.
Any updates yet? Do you need support?