I've made a large purchase on my credit card and used hotpoints Pay® against this, but now I'm nearly at my maximum credit limit. How quickly will my available limit reflect the dollar credit, so I can continue to use my credit card?
Your overall credit card limit should not be impacted by your hotpoints Pay purchase.
Although the dollar credit may take a few days to actually appear on your account, the redemption should remove the corresponding purchase from your available limit almost immediately, so you can continue to use your credit card for other purchases.
You'll still receive a confirmation text message that the redemption was successful, before your limit is adjusted.