How do I find 12 testers for Google Play closed testing?
Recruit testers from friends and colleagues, developer communities (Reddit r/androiddev, Discord and Telegram testing-swap groups) or a small paid tester service, then add their Google-account emails to a closed testing track or a linked Google Group. All 12 must opt in and keep the app installed for the full 14 days — if someone drops out, the 14-day clock can reset. Line up 15–20 sign-ups so you keep at least 12 active throughout.