Question: I got an old Junior Open Water Diver Certification and I wanted to ask if I can get a new upgraded one?
Answer: When you turn 15 years you can upgrade your PADI certification to a regular one, without age-related restrictions. You can order the replacement card directly with PADI online here, PADI will send you then the upgraded certification card. See also https://apps.padi.com/scuba-diving/replacement-card/