Hello @jvanst and @halfer,
This is a recent change to how the 1000 minutes/month are allocated. Each account still has 1000 minutes/month, only now they are allocated to 250 minutes/week. That is what you are seeing in the Usage UI screenshot above.
From our Changelog:
FREE minutes shift to 250/week
Customers on FREE plans will notice a change in how their monthly minutes are allocated. Customers will retain 1,000 FREE minutes per month and will receive them in increments of 250 minutes per week. This will allow customers to budget credits in a more manageable way while aligning with a Mon - Fri work week.