She just gave up the title and money.
No she/they didn’t. They kept their HRH designations although they agreed not to use them, and she is now styled Meghan, Duchess of Sussex.
Although Halfwit supposedly has a substantial inheritance from his mother, H & M are still being funded by Daddy Charles to the tune of $2-$3 million per year, and Charles (not them) indicated his help is not limitless. H & M are still trying to get either the taxpayers in Great Britain and Canada or Daddy Charles to pay their security costs too, to the tune of over $1 million per year.