Yes I already imported the package and it can use IAP Button slso. if I want to open IAP catalog I have to click on IAP Button component instead of in menu, it very inconvenient.
@Rachan You would be strongly advised not to use Codeless, I believe we’ve discussed before. Use Scripted IAP instead. And the IAP Catalog is really only used once, when you first set up your products. You should not change your products once you sell one, only add new products. But to your question, IAP is now under Services top level menu. Instead of Codeless, start with this sample Scripted IAP project and get it working with no changes first Sample IAP Project