Hi , thanks for leaving a review! Sorry to hear, it does sound like the blades are no longer performing as intended.
Noise issues are often caused by the wiper arm instead, so it's possible this was not installed correctly, we'll check on the installation first.
Good news is we do have our 12-month warranty for any performance issues. We'll get this sorted out ASAP.
I've emailed you directly to offer further assistance, as well as express post replacements if needed.
Hope to hear from you soon!
Cheers,
Wipertech Team