Don't use IronX on the film.
PPF film is not as delicate as many claim BUT it is porous so if you happen to use a solvent to remove something on the film, say tar, with a colored microfiber towel the color from the towel can be transferred to the PPF and stain it.
Perhaps the most common issue with PPF and detailers is sloppy polish/wax work. They cake up the edges with product, lift edges or burn them with buffers.
A mild polish, like FP4500 and a finishing pad/polishing pad is all I use on them. Remove excess and spritz with a spray of Opti-Seal.
Tape your edges......but first clean them. Cotton swab with IPA solution.
Anthony