Tried to purchase games from Battle.net but the transaction cannot go through, it appeared "sorry, we weren't able to authorize your card. please choose another way to pay." Do the card default by disable to oversea online transaction? Direct key in to pay or linked card to paypal to pay also shown the same message.

Look like Setel CardTerus at Petronas is to be treated as a Petronas transaction.

https://www.lowyat.net/2023/306270/setel-ma...dit-card-perks/

Don't understand your question.
Which CC you want to ask?

What rewards will I get if I link my Maybank PETRONAS cards to Setel?

Maybank PETRONAS Visa Platinum and Visa Gold cardholders will earn 5x TreatsPoints on weekdays and 8x TreatsPoints on weekends when spending via CardTerus on the Setel app.

Maybank Islamic PETRONAS Ikhwan Visa Platinum and Visa Gold Credit Card-i holders will get 8% cashback on weekends and 1% cashback on weekdays when spending via CardTerus on the Setel app (capped at RM50 per month).