New App 1st login

I have published new App to the Cloud. I can't login with MxAdmin as the password set up for this account is not working. How do I login to a new App.   Nick.    
1 answers

2 options I know:

1. Turn production security off, deploy, create the necessary accounts. Then turn it on again and deploy.

2. Create a microflow that creates the accounts the first time.

I find the first option easier, although it takes some patience deploying to the free cloud and it's a potential risk when someone else finds your app at the exact same time. But that's a very low risk.