Welcome, Dear
Thanks for reaching PayTabs out on our Developers Community. My Name is Hussein Mostafa from the technical support team and I will be looking into this post and following up with you.
Regarding the mentioned case, could you please open a ticket with us and share your PayTabs profile ID along with a screenshot of your PayTabs configurations page to investigate the case more properly.
You should also know that we are providing you with a great "Solutions Portal" that includes so many articles that can walk you through any situation such as the "The How to & The What Is (FAQ)" category which contains the technical and non-technical FAQ, and the "How to Integrate with PayTabs?" category which contains all the available methods to integrate with the fully detailed documentation and "Troubleshooting Your Issues/Errors" category which will allow you to trace and solve your issues without seeking for any assistance.
Please don't ever hesitate to comment back if you still have further inquiries. Let me know if there's anything else I can help with.
Glad to be always in help.
Hoping you have a profitable and successful trade.
shikha aggarwal
I have added the secret key , client key & merchant id for applepay woocommerce plugin, but it's showing an error "Unable to process your request"