Part Or Accessory Type: Transmission

Its a new shifter that was supposed to be 9 speed but instead it only shifts 8 times...i dont need it...its chinese made and NOT ORIGINAL but it shifts well but because its 8 speed and i have a 9 speed derailleur and cassette i cant use it..so thats why i am selling it...i still have the receipts..i hope i am transparent enough about this..thank you CHAT PLEASE BECAUSE MY NUMBER WONT REACH DUE TO NETWORK ISSUES..YOU CAN CONTACT ME ON WHATSAPP