checking…
Goes straight to the team as a GitHub issue.
Or take the app itself. It is the same board, built and signed by whoever set this up, and it installs whatever browser you use. Android will warn that it came from outside the Play Store, which is expected — it came from here.
One set for the whole board, so a card in Doing means the same thing on every project. Renaming one renames it everywhere; a column with cards in it cannot be removed until they are moved.
All three off for somebody new, so a person is invisible to the invite picker until you say otherwise. may be invited lets others put them on a project, may invite lets them put others on one, and may start lets them open one of their own.