Open up the EPP/student portal via whichever method you use, ie a link at perks at work/totum/unidays or whatever, doing that adds some kind of session data to keep your access to the portal without needing a specific email or account, I added the phone/codes/logged into my account and so on at this point too. Following that copy the url excluding the affiliate part (ie
https://www.samsung.com/uk/multistore/uk_student for the student portal) and then head over to Quidco/TCB. On the samsung tcb or quidco page click through to get cashback, once it's loaded the samsung shop main page it redirects you to, you can paste in the URL you got before taking you back to the portal, if you have the tcb/quidco extension it should say it's still tracking - at least it did for me. Head to the basket if you already added everything before and it should track a bit after you've paid.
As always make sure you turn off adblockers or anything that blocks tracking, as it might affect it tracking.
