All Fuse Accounts have spending limits for user security
These aren't permanent and are subject to change at any time based on an algorithmic or manual review process.
Increased limits are typically given to users who have:
An established history (at least 1-2 consecutive months of consistent spending with your Fuse Card)
Regularly maxed out their daily and monthly limits during this time to show the need for more spending.
Basically - If you spend what you have & need more, you'll get more!