There is one thing that is an unfortunate aspect of the Brazilian Jiu-Jitsu world that everybody who has ever practiced this art form has had to deal with at some point, which is that there are a lot of pretenders out there who claim to be something they are not in that universe.
That situation has recently reared its ugly head once again as alleged Fake Judo 8th dan & BJJ Coral Belt Mr. Rodriguez has been exposed to the world now thanks to both the Brazilian Jiu-Jitsu and Judo communities in the country of Mexico. The reason this man was exposed and that the whole situation became public is that his claims of status in the Brazilian Jiu-Jitsu or Judo worlds are both unverified by anybody in each community, which means that he is a alleged fraud, so keep your eyes open for this alleged fake or any of his students.
We get a lot of fakes in my art and they are easy for a qualified instructor to spot but sadly it is not so easy for the students.