There is no easy way to rediscover the LMT admin password.
However, you can query database for dbo.users and find the user.
Once you know the user, you can use the command below to reset the password to 'Administrator1' for user admin:
update dbo.users set "password_hash"='$2a$10$sVH.T/vAZw61VnqwKNKxSeLQYWnTsDhmfIoHXvmvGINihGHEXqH4S' , "authentication_method"='password',"authentication_backend"=NULL where "username"='admin'
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