It is VERY common for supplements, particularly pre-workouts, to slightly harden and clump. These are generally fine to be broken up and even stored in the fridge, while being still 100% safe to consume.
If you have any uncertainties with the product you have received, please send us some photos and we can advise you if the product is OK or not for consumption. To ensure we can take a further look into the matter and contact our supplier, please Email our team a photo of the batch number and expiry. Once we have these we will be in contact with the supplier of the product directly and we can advise on a suitable resolution.