Server’s receipts significantly increased (7)
I believe the answer is:
uploads
'server's receipts' is the definition.
'significantly increased' is the wordplay.
I cannot really understand how this works, but
'increased' could be 'up' and 'up' is found within the answer.
The remaining letters 'loads' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for uploads that I've seen is " Transfers data from one computer to another".)