The earning rules set for scanning rate limit in the dashboard are only applicable to POS transactions and not online orders.
For example, looking at the earning rules below, a guest will only be able to earn once in a span of 4 hours if the transactions are from the POS.
The above earning rules only come into play for POS transactions. If the guests place online orders, they will be able to earn points for all the orders even if there is a limit set for earning rules.