# Which Problems Are Solved
When authenticating with email or phone number in the login V1, users
were not able to request a password reset and would be given a "User not
found" error.
This was due to a check of the loginname of the auth request, which in
those cases would not match the user's stored loginname.
# How the Problems Are Solved
Switch to a check of the resolved userID in the auth request. (We still
check the user again, since the ID might be a placeholder for an unknown
user and we do not want to disclose any information by omitting a check
and reduce the response time.)
# Additional Changes
None
# Additional Context
- reported through support
- requires backport to v3.x
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