Is there a limit on how many receipts can be scanned?

There is a limit of 14 receipts scanned in a rolling seven day period.

For example, if you scanned 5 receipts on Monday, 5 receipts on Wednesday, and 4 receipts on Friday, the next week you are able to scan 5 receipts on Monday again. If you didn't scan that Monday, you would be able to scan 10 on Wednesday.