ND filters for DJI O4 Pro

Could you please recommend some ND filters for the DJI O4 Pro unit? I ordered a set from RDQ (ND filters for the Avata 2), but they don’t fit properly, and I ended up shattering the UV filter by applying a bit of pressure. I also looked into filters from Flywoo and Freewell, but it seems like they don’t sit securely on the camera either.