Lego Boost: how can I gain access to all the programming blocks?
Based on the link provided by @RSchulz, this is my current understanding of programming blocks availability in the Lego Boost app:
There are two different types of canvas areas in which you can create projects: the Coding Canvas which you can reach by tapping on the big red toolbox that is in each robot submenu, and the Creative Canvas, which can be reached from the main menu by tapping on the open window.
The former has different blocks for each robot, and gets blocks added every time you complete one of the predefined tasks.
The latter has many advanced blocks but is missing robot-specific blocks that are in the other canvases.
There is no canvas that makes all existing blocks available.