mac 10.12.4
Seagate backup plus ultra slim
paragon NTFS for mac v14.2.288

after using the drive for just a few hours, it needs repair but repair fails:

- in the paragon control panel, verify reports "This disk needs to be repaired. Click Repair Disk"
- after clicking repair, it reports "File system verify or repair failed", with detail "Updating boot support partitions for the volume as required".

mac OS's disk utility first aid is I assume not useful for NTFS.

Now what ?