Download link missing on payment return page

I've installed the Document Seller on a test website that I've built and for the first few test purchases it showed the link to download the file on the order summary when I returned to the site after paying through paypal, now it seems to have stopped doing that and I'm not entirely sure why.

s126843457.websitehome.co.uk/test/

I can provide the admin login if you wish to take a look at the component configuration.

Hi

I think you changed a setting and causes this issue . Please submit a support ticket contains administrator and FTP account of your site so that I can have a look at it and check it .

Regards,

Tuan

It seems to have corrected itself now, I tested it again last night and the download link has returned. May have been some odd browser caching glitch or it may have been the JQuery plugin that I later removed as it was interfering with other components.