I have installed nopcommerce 3.80 and decided on Worldpay as my gateway provider. I used the standard plugin but was told by Worldpay that I need a different plugin which uses 'installation ID' rather than 'Merchant id' for the type of account they have given me. They sent me a link to an older plugin which works this way. I installed the older plugin but it just gives an internal error whenever I try to access the configuration page, though the install seems to be successful.
Has anyone else got a worldpay account using this installation id setup rather than merchant id? Is there a suitable plugin available?
Thanks in advance