Haauti was a macOS client for Jodel. It has not been maintained since 2018 and has drifted into incompatibility with the current Jodel API.
Run pod install, and fetch a copy to ./Libs/PullRefreshableScrollView. In the ./Libs directory, you'll find a modified (made to support determinate progress levels), stripped down version of ProgressKit. You needn't change anything to it.
Then open the .xcworkspace in XCode and hit run. It may work.
Haauti currently displays the last Jodels in your area, allows you to set an artificial geographical position for Jodel or to just let it follow your actual position. It is mostly read-only (the only "write" action it performs is creating an account – not activating it, just creating it, for you to read the Jodels). It also displays the karma. More features are likely to come, the first one being actual error reporting.
Likely some encryption key issues. I won't go over on how to fix these, as I don't think Jodel would like it. There are, however, more than enough resources here on Github about this. For reference, the Jodel keys are located in the JodelAPISettings class (in this project).
It's how a link to this video is labeled in the (Android, at least) Jodel app : Jodelhaaaaauuutiiii. I stripped Jodel and also some of the redundant letters.
https://github.com/AsamK/JodelJS https://github.com/nborrmann/jodel_api