The web app is no longer being actively developed. The native apps are the only thing being worked on moving forward. This is because the web app has only one advantage, it works on desktop. However, OSPi recently got a new UI for desktop and the native apps offer everything else. As a result, I see no reason to develop both versions.
Your welcome to add 2.0 support to the web app and I will merge the pull request, if you want.
If there are any other reasons your using the web app please let me know.