OTP Verification using firebase in Android Studio KOTLIN

Source Code:
play.google.co...
OTP Verification using firebase in Android Studio KOTLIN

[@ashwaniraj1108]

after entering OTP. it gives toast "invalid OTP"

[@biharrohitindia]

google play subscription par ek video banaye sir java ko use kate huye kotlin vala aapka video maine dekha hai sir java me bhi banaiye sir

[@deccontech]

th-cam.com/video/RjBHIOiKbWg/w-d-xo.html

[@mythoughts5354]

SHA1 key not coming

[@deccontech]

Source Code:
play.google.com/store/apps/details?id=com.sunilnaithani.sourcecoders