A: Yes. While rumors of "Naisan retiring" pop up every six months, the seller remains active as of 2025. If the Yupoo is down, they may have moved to a new URL (check their WeChat moments for updates).
Passwords and private albums exist for a reason. Trying to bypass or aggressively hunt for the password carries real risks: naisan yupoo password
Do not trust random Google results. Go to Reddit: A: Yes