You have received exactly what you ordered. Just read the technical data sheet that is available under Downloads. You can't accuse the manufacturer of trying to fool you just because you don't read all the information.
Can you explain to me why you absolutely need Cat 7 (cable + connector) which is not possible with Cat 6 (cable + connector)? You really need to transmit 10 Gbit/s over 100m? Cat 6 (cable + connector) can also transmit 10 Gbit/s over up to 50m.
As far as I know, RJ45 is only approved up to Cat 6. RJ45 does not exist with a higher cat. Unless you know otherwise. Cables, on the other hand, are available higher than Cat 6, that is correct.
https://de.wikipedia.org/wiki...https://de.wikipedia.org/wiki...)
Network cables and plugs are like cars. Better to take the car with 300hp than the one with only 200hp. Although both can do max 120kmh on CH motorways.