Click Import for real and confirm. If the wizard will create products and prices, it says how many first: they are created in Paddle, and undoing the import doesn't remove them. The import then runs in steps, showing its progress, and ends with the same report as the trial.

If the server stops a step, because it ran out of time or memory, nothing is lost. Find the import under Previous imports at the bottom of the page and click Continue. It picks up where it stopped.

When you are done, click Finish and delete the loaded data to remove the dump and the temporary tables it was loaded into. See the section called “Where the Old Data Is Kept, and When It Is Deleted”.