Major issue is dealing with OAuth in an Electron app. More specifically, storing the API secret on the client is not straightforward and requires use of a proxy server + authentication.
Migrating to a Play + Scala server-side application instead.
An Electron application that simplifies exporting notes out of your Evernote account.
Currently, the Electron app itself is licensed under GPLv3, but the underlying EverExport API is MIT licensed.