I used the same apk before uploading to playstore. At that time OTP verification process was successful. But after rolling out to playstore I installed the app, now firebase otp verification is not working.
The problem is same app in playstore is unable to generate OTP
What To Do With Old Fingerprint?
I believe you should replace it only and I mean only the SHA1 value
Nothing… in the firebase console, just add a new one, and it will work.
I Had Same Problem But I solved It By Changing The SHA - 256 & SHA - 1 Key That Has Been Given By Playstore Signing Key
Image To change The Key
1.Go to Playstore
2. Go to app signing Key
3. Copy The Keys
4. Paste in Firbase Auth Json File
5. Now Check It Will Work