After following this article to register in ClickPay, you will be ready for integration with ClickPay and test payment features with your test profile.
Under your dashboard: go to Developers page, click Transaction API link, and then follow the instructions. You may also find this article useful.
You can find dummy cards for testing purposes under your dashboard, go to Developers page, then find them in Test Cards page.
You might also need the following resources:
For mobile apps SDKs:
Native IOS SDK: https://cocoapods.org/pods/ClickPay
iOS sample: https://github.com/clickpaysa/clickpay-ios-library-sample
Android sample: https://github.com/clickpaysa/clickpay-android-library-sample
WooCommerce plugin: https://github.com/clickpaysa/clickpay-woocommerce
Magento2 plugin: https://github.com/clickpaysa/clickpay-magento2.x
Drupal commerce: https://github.com/clickpaysa/clickpay-drupal-commerce
Check ClickPay app page on Shopify App Store