Rakuten Card showing ¥0 available but I should still have some limit left?

Hi everyone,

I just checked my Rakuten Card app and it shows:
• ご利用可能額 (available amount): ¥0

The bar is still green, but my available credit limit says ¥0.
I’m pretty sure I had around ¥3,000 yen left before, but now it suddenly dropped to zero.

Is this normal? Does Rakuten temporarily set the available amount to zero around the 27th when they deduct from the bank? Or is something wrong with my card/account?

Has anyone experienced this before?

Thanks in advance!

Note: Rakuten already deducted the payment from my yuuchou.