Good evening Nairalanders,
Hope you guys are doing great. For sometime now, my new clients from GTPay requesting for my GTPay Opencart Payment Extension have been experiencing difficulties with the system because the new transaction request url https://ibank.gtbank.com/GTPay/Login.aspx is having countless issues while processing sent parameters. This was a big challenge to me because the clients enjoying my extension are the ones having a later merchant ID e.g 227 or people that registered few years ago.
Finally, it took me lots of sleepless nights to figure out the exact issue and by the special Grace of God it is now fixed. You can do a test at www.latushng.com to have a look at it and also do a test at www.siodleather.com.ng to have a look at the one that works for the later.
In case you want to purchase my payment extension, you can email me at winexviv@gmail.com.

Goodluck

Interswitch/gtpay integration

Get an interswitch/gtpay online payment gateway integrated on your website.

We do online payment integration on custom websites and all major CMS’ including:

wordpress, Joomla

Magento, Opencart

Oscommerce, dupral

Your website must be live or at on a test environment that can be accessed over the
internet. We can also help develop your website to meet international standards and requirements.

Follow this link and complete the form:
http://e-magin.com/interswitchgtpay-integration