AHH now I see what you are doing each column can be a component on its own but that isn't very clear.
at the moment you have only 1 of the columns as a component
you should have ALL
the columns as components & each given a unique title & description so that people can save whichever column they want as a component individually;
At the moment you only have the one with 1 column & 4 containers The title you have given that component is 4 subgrid-columns
but it isn't subgrid-columns it's a column with 4 containers
so really the title for that component should be something like
component-4 one-col- four-cards
You need to start from the top column and add it as a component to the project (no need add it to resources just add it as a component)
call it something like "component-1- one-col one-cards
that way anyone using your component, has a choice for which one they want to add to their project, or they can add all 4 individually and then make the choice as to which one they want to add to a project.
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