Most of our offers may only be claimed a certain amount of times in a month (e.g. Pancake House's offers which you may only claim 4x a month, as seen in the photo below).
The 'offer refresh' date found on your Account Details indicates when the offers which you have already claimed will renew/refresh, so that you may enjoy them once again!
If you are on a paid monthly subscription, this also serves as the billing date for when your credit card or other payment mode will be charged. This date indicated does not mean the end of your subscription.