SaaS referral/affiliate platform
FirstPromoter Affiliate Link Checker
FirstPromoter links use an fpr parameter on the SaaS vendor’s domain (yourapp.com?fpr=yourname). They break when the vendor’s site restructure drops the parameter, when the promoter program ends, or when the signup flow moves — all failures where the link still "works" for the visitor and silently stops paying you.
How FirstPromoter links work
Typical link
https://saasproduct.com/?fpr=yournameFirstPromoter attributes referrals via the fpr (or fp_ref) parameter read by a script on the vendor’s site, which sets a referral cookie for the signup that follows.
Everything rides on that one parameter surviving to a page where the script runs. Marketing-site redirects, domain migrations, and cookie-consent flows are the usual points of failure.
Link domains
(vendor domains) · firstpromoter.com
Tracking parameters
| Parameter | Role |
|---|---|
| fpr | Your promoter handle — the whole attribution mechanism |
| fp_ref | Alternative referral parameter |
How FirstPromoter links break
Parameter dropped in redirects
Vendor adds www/locale/https redirects that strip query strings — fpr never reaches the tracked page.
Program discontinued
The vendor sunsets its referral program; links load normally, attribution is gone.
Signup flow moved
The tracked marketing page is replaced by a new funnel where the old link’s cookie no longer covers the signup domain.
Error signals Afterlink detects
These are actual failure fingerprints from Afterlink's validation engine for FirstPromoter links:
- ▸fpr / fp_ref lost through the redirect chain
- ▸Landing page 404 after site restructure
- ▸Cross-domain redirect that abandons the referral cookie
How Afterlink checks FirstPromoter links
Afterlink extracts every link from your YouTube channel or website, recognizes FirstPromoter links by domain and parameter signature, then runs five checks on each one: the full redirect chain (including JavaScript and meta-refresh redirects), network error-page detection, destination verification against the embedded target, tracking parameter analysis, and deep-link decay detection (product page silently replaced by a homepage). Every link gets a clear verdict — working, warning, or broken — with the evidence attached.
Frequently asked questions
My fpr link redirects and loses the parameter — is the referral dead?
If the parameter is gone before a page with the FirstPromoter script loads, yes — the cookie never gets set. Ask the vendor for a canonical link format, and monitor your links so you catch stripping when the vendor changes their site.
How is FirstPromoter different from PartnerStack for link checking?
Mechanically they’re similar — parameter-on-vendor-domain tracking. Both fail via parameter stripping and site restructures rather than network error pages, so both need redirect-chain checks rather than simple "does it load" pings.
Troubleshoot FirstPromoter
- FirstPromoter Links Not Working? Diagnose and Fix Them
- FirstPromoter Link Redirects to Homepage Instead of the Product — Fix
- FirstPromoter Tracking Not Working? How to Verify and Fix Attribution
- FirstPromoter Program Closed or Merchant Left? What Happens to Your Links
- How to Test FirstPromoter Affiliate Links (Complete Procedure)
Related networks
Check every affiliate link you've ever published
If you've published FirstPromoter links, some of them are probably broken right now. Afterlink scans your entire YouTube channel or website, follows every redirect chain, and alerts you the day a link breaks.
Run a free scan