There are big problems with this. In the near future it will not be able to do it.

For stable operation of the application, you must upgrade your server to the latest version of the taiga.

Hello. This week will be updated app (android), which is added login via github

Hello. No.

Just waiting for update ~1h

You must select a project, select in the sidebar "sprints", go to the "sprints" tab, click on the interests you sprint, and then click "Open taskboard"