Hi,
This eway plugin is for the API available at :
www.eway.com.au/gateway_cvn/xmlpayment.asp
If you try to access it directly with your browser, it still provides a normal error message, so the API service seems to still be working.
Also, no one told us that it was shut down or that the plugin didn't work anymore.
They should also be familiar with that API since they talk about it on this page:
www.eway.com.au/add-ons/sitefinity/
However, maybe eway doesn't provide access to this API anymore for new merchants ? Or maybe you need to request access to it ?
I think you were right in checking with eway about it in the first place. While we developed the plugin for it 10 years ago, the plugin is still working fine as far as we know, so it's likely something to do with the merchant account on eway's end.
What I can say is that this error message "No URL set!" comes from the eway API, not the plugin. The plugin is only displaying the error message provided by the API. And since they removed any page of documentation for that API on their website, I can't say anything about why you would get that error message.
On their website, they now direct to the eway rapid API of eway.io (which wasn't the case before). We actually have a plugin for eway rapid too:
www.hikashop.com/marketplace/product/115...apid-by-obsidev.html
This plugin is based on the PHP SDK for eway rapid at
github.com/eWAYPayment/eway-rapid-php
The version of the SDK is an old one but as far as I know, it still works fine.
I would first recommend you ping them back basing yourself on what I wrote above. Maybe that will help them help you use their API, or maybe they'll recommend you to switch to eway rapid ?