Did they ever stand up?
I have a 8 month old German Shepherd/Belgium Malinois cross her ears are floppy. Both parents are registered, I have had her 5 months and feed her the best food I could find, mix kimble with canned ad eggs and shells, yogurt and co oil. She has been rationed and fed 4 times a day, vet checks regular. She has all kinds of real bones, kong toys, kong tennis balls etc. lives on famr gets lots of exercise, and does not sleep in a crate.
I would liek them to stand but not a big concern. I see a lot of information on the interenet, but I do not see any follow ups to see if when the dogs ear stood up on their own, no tape and if so at what age