first of all, this is a forum and you did NOT buy a Shelf, so you can't expect the same level of support of a user who bought a Shelf, which has a direct support channel with us.
As for the "issue", that is how PubCoder works: when you place an asset on the stage, by default it never exceeds the size of the stage, of course you can resize it to the desired size after it is on stage. This is the better behavior for most users, since probably you will use images that are way bigger of the stage in pixels size, and it would be difficult to resize a very big image later than adjusting it. This is a proper UX design choice for us.
About the "actual size" menu, that is for the page zoom, so it is doing what it should: setting the zoom to 100%.