Inkdrop client displays blank when opened on MacOS

Interesting.
Seems like the local database is not loaded properly for some reason.
I guess the problem resides in the main process.
Could you please run the app from terminal by the following command?

> /Applications/Inkdrop.app/Contents/MacOS/Inkdrop

And let me know error logs.

Also please try reloading the browser window by selecting menu Developer -> Reload.
If it were a race condition issue, the app should load properly.