Workflow loop not even initiating inner tasks

I had problems in the past using the Manage Accounts actions inside loop. Instead, I used the HTTP Request action, combined with IDN API:

Although in this case, I had to remove entitlements. Perhaps you may try the disable account API:
{{baseUrl}}/accounts/:id/disable
is documented here:

By the way, what is the purpose of the entire workflow? Do you have to disable accounts based on what?