All my transactions were over $50 and I did not get 1 to 2 points per transaction:One way to check a transaction has correctly registerd is to check if you got the ff points (1 or 2 points per liter depending the fuel type, plus any applicable booster). They seem to post overnight.
I did not get a success confirmation email, and got the SC after 1 month.
02-Aug-2021
BP REWARDS
+33
01-Aug-2021
BP REWARDS
+210
25-Jul-2021
BP REWARDS
+99
11-Jul-2021
BP REWARDS
+68
04-Jul-2021
BP REWARDS
+34
Still no SC for me yet