Why it say I should put a payment method before I can update my app it doesn’t say that before

Check here -> If a message says 'billing problem with previous purchase' or 'verification required'

If a message says 'billing problem with previous purchase' or 'verification required' - Apple Support

• If these messages appear, you might be unable to make purchases, download free apps, or use subscriptions. To fix the issue, change your payment method. If you can't change your payment method, you can redeem a gift card and use the balance to pay for any unpaid orders.

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