Unfortunately, the credits were valid for a year.
To reactivate the expired credits you would have to purchase any of the Adobe Stock plans here Adobe Stock pricing and membership plan | Adobe Stock
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Feel free to update this thread in case of any additional query.
Ok, so if I reactive a subscription with you guys, I will get them back, even if it's been a long time? You can promise that to me? If so, I will get a subscription with you guys !
I only have to follow that link and get the month to moth subscription (for example), I will get all my lost credit back ?