Students are always going to give undercarriages a hard time, possibly the only thing to learn here (or have reaffirmed) is that Tecnam's aren't terrifically robust.
We had one online for a while, I recollect comments about the undercarriage being a bit light for training which is why it had been 'retired' from the previous operator and was never for use by inexperienced pilots.
Pleased to read that from an injury perspective it's possibly only a bruised ego at worst.