I have also got the same problem, was able to claim it on one other captain. But I now can't claim it on any other captain including the one I got it with originally.
Well that confirms I will not be getting the anniversary ship this year as I don't have the data left this month to download the entire bloody game, and of course the moron responsible for this TRIBBLE up will not will not face any consequences, as per normal.
Tal Shiar Adapted Scimitar. Stats, boff layout and consoles as per normal Scimitar. Visual. think Adapted battlecruiser/destroyer crossed with Donatras Scimitar. Change singularity core with anti-matter warp core, and Singularity powers with battlecruiser commands.