first of all, I again want to thank you for your last help. It brought me to the right track.
Now I got another challenge, for which I need some hints: I want to read out the referring affiliate name to my custom login/registering form of my site. I checked the cookies, which are set, when visiting the login/registering page with an affiliate ref-link, but I didn’t find any affiliate-cookie, where I would be able to read out the affiliate-ID to be able to make a database request for the corresponding affiliate-name.
Also the shortcode [referrer display] only seems to work, when the respective referral is logged in.
I would be grateful, if you could tell me, where can I find the ref-info, which is stored by the ref-link when visiting the site. Or is there another shortcode or hook/filter, which I can use?
Thank you very much for your fast help in advance.