Many thanks for your patience. Whether goods you purchased are not as described, not of satisfactory quality or not fit for purpose will not necessarily be dependent on whether any issues were caused on delivery or before they went out for delivery.
In the end, your contract is with the seller and you have the right to expect that they will be delivered in good condition. If they are not, regardless of when the damage occurred (as long as it is before you accepted the delivery), your rights would not change.
They may have their own terms and conditions, requiring you to inform them of any damage within 7 days, but whether it is 7 days or 7 weeks later, the key is whether you were supplied with damaged goods or not. Even if the damage occurred in transit, you still have your rights against the seller and they in turn will have their own rights against the courier.
You can therefore still ask for a replacement if you are outside of the initial 30 days to reject the goods.
I trust this has answered your query. Please take a second to leave a positive rating by selecting 3, 4 or 5 stars above - this is an important part of our process and recognises the time I have spent assisting you. If you still need me to clarify anything else, please reply on here and I will assist as best as I can. Thank you