Why am
I being charged for more than my daily budget on some days?
Depending on the daily limit you’ve set and the campaign cost
metrics, on some days your campaign may be spending on over your
daily limit set due to fast delivery of your ads. Due to the fast
delivery and the low daily limit our system will be able to stop
the campaign once your daily limit is reached as there are some
system delay and user traffic fluctuate
The suggested daily limit budget to overcome the issue is $20
or more.