mystery net fails

I recently used 2 mystery nets and one of them didn't give me any fish , there was items in the net but no fish just 3 grey blobs . I thought the fish just haven't showed up on the net but there wasn't in my barn as well . waste of diamonds , not happy . I had used mystery nets before and none of this happened until now .

If you've not yet done so, please submit an in-game report so Support can look into this. Attach any screenshots you may have taken of the blobs.

If this happens again, also make sure to take screenshots of the net contents and submit another report.