We developed extensions and tested with default opencart installation and theme. It is also possible on some custom themes and modules. We have already done thousands of configuration for our extensions already with custom themes and modules. It is highly recommended that you contact us prior to purchase so we can tell you if its free or paid configuration depending on extension. We also state on extension description if it shall support custom theme / modules.
All our extension comes with free one time installation. For this FTP and Admin is needed. Our response time is within 24 hours on working days. You can ask us for installation anytime within 1 year from your date of purchase.
If you are using any third party theme or modules then it can happen that extension you purchased is not working.That does not mean our extension is not working. It only means is that it needs a configuration.
If you have not purchased the extension and want to know the about the working with your custom extension / theme you can contact us via email at email@example.com
Send your opencart extension order id, FTP/Cpanel details and admin details to email: firstname.lastname@example.org