Yes, both online and in-store purchases will count towards earning store credit. You can accumulate the 3000 Baht in spending across multiple transactions, either online, in-stores or across both.
Do note that you have to identify yourself as a member to our cashiers, or sign up as a member on the spot, before the transaction is completed in order for the transaction to be recorded in your account and to earn store credit for the purchase. If you do not identify yourself as our member before the transaction is completed, your purchase will not count towards earning store credit.