radowning wrote:

With the "certificate" they received, they should have had something that
gave them a Right Ascension / Declination or Altitude / Azimuth coordinate,
or something like that. Perhaps it had Galactic Coordinates, but there
would have been something.

Given any of the above, the star is able to be located (given that it is
oriented for your hemisphere, or latitude)...

I haven't seen the certificates these star-naming scammers produce,
but if they were even slightly conscientious they might also have
included a standard designation like a catalog number. If any of
these data were provided the star can be looked up with SIMBAD, at

http://simbad.u-strasbg.fr/sim-fid.pl.

--Odysseus