Logic Masters Deutschland e.V.

Previous Dutch Flat Mate Puzzles
This has been a weekly series since '18 Oct 23'. Here is a spreadsheet link for all the previous puzzles in the series, which also has a few teasers for upcoming constraints/guest setters in the series (subject to change).
This alternative link offers a limited LMD search for Dutch Flat Mates.

Special Thanks
The inspiration for this puzzle is Liars and Killers by Jay Dyer.
Thank you to palpot, for collaborating on the setting of this puzzle.

To play the puzzle, please click the image:

Initial Setter Difficulty: 2.5 / 5

Normal Sudoku rules apply
Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.

Dutch Flats
Every 5 in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both.

Liars and Killers
Not all killer clues are accurate, but the digits in a cage must sum to AT LEAST the clue in the top left corner. Digits may not repeat within a cage.

Hint to start

Can a happy 5 exist in either 14 clue? It's also worth remembering that 5 in Row 1 only has one Flat Mate option.