just ran delete from core.person where personid = 55010


then ran:
Set IDENTITY_INSERT core.Person On

Insert Into [core].[Person]
(
    [PersonId]
    ,[RoleId]
    ,[GenderId]
    ,[AddressId]
    ,[FirstName]
    ,[MiddleName]
    ,[LastName]
    ,[Handle]
    ,[Password]
    ,[Title]
    ,[Overview]
    ,[BirthDate]
    ,[Image]
    ,[ForcePasswordChange]
    ,[EmployeeHireDate]
    ,[EmployeeFireDate]
    ,[IsInternal]
    ,[IsActive]
    ,[IsLoginConfirmed]
    ,[ExternalKey]
    ,[CreatePersonId]
    ,[UpdatePersonId]
    ,[CreateDate]
    ,[UpdateDate]
)

Select
    55010 as PersonId
    ,1 as RoleId
    ,0 as GenderId
    ,0 as AddressId
    ,'Kelton' as FirstName
    ,'Matthew' as MiddleName
    ,'Crouse' as LastName
    ,'Kelton.Crouse@gmail.com' as Handle
    ,convert(varchar(32), HashBytes('MD5', 'NaCl_And_Peppa123'), 2) as Password
    ,'System Admin' as Title
    ,'' as Overview
    ,null as BirthDate
    ,'' as Image
    ,0 as ForcePasswordChange
    ,null as EmployeeHireDate
    ,null as EmployeeFireDate
    ,1 as IsInternal
    ,1 as IsActive
    ,1 as IsLoginConfirmed
    ,'COPE-SYSTEM-ADMIN' as ExternalKey
    ,1 as CreatePersonId
    ,0 as UpdatePersonId
    ,GetDate() as CreateDate
    ,null as UpdateDate

    Set IDENTITY_INSERT core.Person Off
then cleared cache, and attempted to log in....

LogId    MessageTypeId    Code    Method                          Message                                                                                                               Timestamp
31038    1                 n/a    Person.AuthUserByCredentials    kelton.crouse@gmail.com found but the password failed or the user is inactive or the user is not allowed to login.    2017-11-06 15:17:46.860

That's what returned.

Here's my payload giving 401 unauthorized:

{source: 1, handle: "kelton.crouse@gmail.com", password: "123", remember: null}handle:"kelton.crouse@gmail.com"
password:"123"
remember:null
source:1