Why is my Paystack payment gateway not processing transactions?

Payments + Shipping & Fulfilment
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Topic summary

Issue: Paystack payments at checkout return “Your payment can’t be processed for technical reasons,” despite being activated and showing no limitations on the Paystack side. The merchant also asked whether bank deposit can be used on the store and how it works.

Guidance provided:

  • Paystack is a third‑party gateway; fix requires configuring it from the Paystack dashboard to Shopify.
  • Ensure the correct Live API Keys are used and entered in the right fields (Public Key vs Secret Key).
  • Confirm the Shopify store currency matches the default currency set in the Paystack dashboard.
  • A Paystack Help Center article (linked) provides step‑by‑step instructions to resolve the error.

Action items:

  • Retrieve Live API Keys from Paystack dashboard and re-enter them in Shopify, verifying field placement.
  • Align store and Paystack account currencies.
  • Follow the linked Paystack troubleshooting guide.

Status: No confirmation the issue is resolved. The question about enabling and using bank deposit remains unanswered; discussion appears ongoing.

Summarized with AI on January 22. AI used: gpt-5.
1

Hi, I recently started using paystack as a payment gateway for my store. It always tells me that the transaction can’t be processed due to technical reasons. I’ve tried all possible and it has been properly activated on my store. Paystack even says I have no limitations. Please what do I do?

Also, can I use bank deposit on my store? And how does it work

my store’s URL is www.shopwithfaceless.com

2

Hi, @Rose2006 .

Welcome to the Shopify Community.

I understand that you’re using Paystack as a payment gateway and receiving the following error message: Your payment can’t be processed for technical reasons. Try again or use a different payment method.

I would like to advise that Paystack is a third-party payment gateway and although the issue is appearing on your checkout page on Shopify, it would need to be resolved by collecting your Live API Keys from your Paystack dashboard and inputting them into Shopify.

The common reasons for this error message are:

  • Using the wrong API keys e.g putting in the Public Key in the Secret Key field, and vice versa
  • The currency of your store and the default currency on your Paystack dashboard do not match.

I located a Paystack Help Center article regarding the error on Shopify. You can follow the step-by-step instructions listed in Paystack’s Help Center article to resolve the issue.

I hope this helps!