1. Go to Marketing > AI Tools > Buy AI Credits (the AI Wallet page) or click Add credit on the wallet banner.
2. Pick a pack: Starter $1.00, Essentials $5.00, Growth $10.00, Business $20.00, Pro $35.00, Scale $50.00 (marked MOST POPULAR) or Enterprise $100.00, and click Add $X credit. For any other amount type it into the Custom card and click Continue (minimum $5.00; smaller amounts show Minimum custom amount is $5.00).
3. A confirmation asks ARE YOU SURE YOU WANT TO ADD $X IN AI CREDITS? – click Confirm Purchase.

The card on file for your Sprwt account is charged the credit amount plus a 3.5% processing fee (for example $50 of credit is charged as $51.75). On success you see Credit Added Successfully and the Available Balance updates on the spot. If the card charge fails you see Unable to process the charge (or the card error message) and no credit is added.