Open Router won't accept my card

To start off, I'm from the Philippines so it's difficult to have a card other than my gcash (Since I'm also a univ student). And it won't accept my card when I'm planning to buy 10 USD credits for the free 1k messages. I only want to use GLM models and I could try Z.ai but I'm also afraid that it could have some hidden charges. Any thoughts? Or help huhu