T4E shows repayment rate of 30% but my total income was less!

My total income  is

EI - $22347 ($314 tax paid)

CRB - $1500 ($150 tax paid)

Instacart Self income - $800 (no tax paid)

Now that's as income I had in 2021 but my income tax shows $1400 to repay. My EI box 7 shows 30% repayment. Can someone tell me why do I have to repay and is this $1400 reflecting that 30%?

Doesn't make sense to pay so much on a mere $24500 income.

Thanks for clarifying.