Curacao is currently transitioning its currency from Antillean Guilder (ANG) to Caribbean Guilder. That's why you are experiencing unavailability issues when changing the currency. Our engineering team is actively working to get resolve this matter promptly.
In the meantime, I recommend reaching out to our support team so you'll be added as one of the affected users. At the same time, be looped in for any updates.
Here's how:
Click the Help button on the upper right.
Go to the Search tab, and type Contact us.
Choose how you want to contact our support team. You can either use the Chat or Call us back option.