ChitChat issues, for now, Mastercard debit cards. That means your card can be used on POS, ATMs and e-commerce sites that accept Mastercard.
In most cases, your transaction will work without issues. However, if your card fails on platforms that deal in cryptocurrencies, fx trading or gambling, there might be nothing we can do about it as the block might be on a Mastercard level. When that happens, we encourage you to first write to the platform and ask them if they work with Mastercard.