Affiliate marketing is one of the main ways players find online casinos and sportsbooks, and one of the most competitive. Better Collective, one of the largest listed iGaming affiliates, reported €371.5m of revenue in 2024, which shows how much money flows through affiliate channels. It also shows why small, repeated mistakes are so expensive: in a market this big, the affiliates who avoid them take the share.
In this article, we cover the 15 iGaming affiliate marketing mistakes we see most often from the ad network side, and how to avoid each one.
1. Insufficient testing
Launching a campaign without enough testing is a recipe for failure. Run structured A/B tests to find what works for your audience: ad formats, messages, landers and targeting options. Change one variable at a time so you know what moved the result.
2. Ignoring the importance of targeting
Targeting the right audience is crucial in iGaming. Segment by GEO, device, OS and behaviour, and tailor your messages to each segment. Choose GEOs where the operator is licensed and where your offer fits local payment methods and preferences. Check our monthly Top GEOs in iGaming reports for markets that are converting right now.
3. Overlooking mobile optimisation
Most iGaming players are on mobile: 58% of European online gambling revenue came from mobile devices in 2024, according to EGBA. Optimise ads and landing pages for mobile first: fast loading, simple navigation and a sign-up flow that works with one thumb.
4. Neglecting compliance and regulations
iGaming is heavily regulated, and non-compliance can lead to lost deals, fines and blocked accounts. Stay informed about the rules in your target GEOs and make sure your ads follow them: age restrictions, responsible gambling messages and no misleading claims. Regulation can change overnight, as Brazil showed when it banned fixed-odds betting and its advertising with Provisional Measure 1.394 in September 2026.
5. Overlooking traffic sources
Not every traffic source will deliver good results. Monitor and compare sources (paid networks, SEO, email lists, direct) on cost per FTD, and move budget toward the ones producing depositors.
6. Using too many ad creatives at once
Testing multiple creatives is essential, but loading too many into one campaign fragments the data. Limit each test to a handful of creatives so every variant gets enough traffic to judge.
7. Mixing GEOs, traffic types and devices in one campaign
Combining different GEOs, formats and devices in a single campaign makes the data unreadable. Player behaviour varies a lot between them. Run separate campaigns so each result means something.
8. Neglecting to track and analyse results
Without tracking, you can't make data-driven decisions. Use a tracker, pass SubIDs and send deposit postbacks to the ad network. Our guides to S2S postbacks and SubID tracking cover the setup.
9. Not setting clear goals and KPIs
Without clear goals and KPIs, it's hard to measure success or know what to fix. Define specific targets for each campaign, such as a maximum cost per FTD and a minimum registration to deposit rate. Our guide to iGaming metrics explains which ones matter.
10. Overspending without an ROI focus
Spending heavily without watching return on investment drains budgets fast. Set daily caps, review results by source and move money to what's delivering deposits.
11. Failing to adapt to market changes
The iGaming industry changes constantly: new regulation, new operators, new player habits. Keep your offers, GEOs and landers up to date, and review your strategy every month.
12. Putting all your eggs in one basket
Sometimes the problem isn't the traffic but the offer. Promote more than one affiliate program and brand. One operator can have a stronger brand, better bonuses or better payment options than another in the same country. Compare deal types too: our iGaming affiliate marketing guide explains CPA, revenue share and hybrid deals.
13. Ignoring timing
Timing is everything. Betting activity usually peaks in the evening and around fixtures, and major tournaments bring the biggest spikes: H2 Gambling Capital estimated around $60bn would be wagered through legal sportsbooks on the 2026 World Cup. Weekends during the football season usually bring strong results as well. Plan budgets around the calendar.
14. Using outdated landing pages
A landing page still promoting an event that's already over damages trust. Keep landers up to date, free of technical errors and fast to load.
15. Not using whitelists and sub-vertical targeting
Running casino and betting offers on the same untargeted inventory wastes budget. Use whitelists built for your vertical (casino or betting) so your ads run on publishers proven for that type of offer. On Traffic Nomads, White List Auto-Update keeps those lists current automatically.
Which mistakes cost the most money?
Not every mistake costs the same. From what we see on the network side, three do the most damage:
- No deposit tracking. Without an FTD postback, every optimisation decision is a guess, and the algorithm optimises toward clicks.
- Mixed campaigns. One campaign for several GEOs and devices hides the winners and keeps the losers alive.
- Unlicensed GEOs. Promoting an operator where it isn't licensed can cost you the whole affiliate relationship, not just the campaign.
Fix these three first. The others matter, but they only pay off once tracking, structure and compliance are in place.
How do you avoid these mistakes in practice?
| Mistake | Quick fix |
|---|---|
| No testing plan | One variable per test, enough traffic per variant |
| Mixed campaigns | One GEO, one device type, one offer per campaign |
| No deposit tracking | S2S postback for registration and deposit |
| Wrong KPIs | Judge on cost per FTD, not CTR |
| One offer only | Test at least two operators per GEO |
| Outdated landers | Monthly review of every live lander |
| Unlicensed GEOs | Check the operator's licence before launch |
Conclusion
iGaming keeps growing, and affiliates keep investing more in it. Avoid these mistakes and you'll spend less on traffic that never deposits and more on the sources that do. Don't forget to ask your account manager for tips on taking your iGaming campaigns to the next level.
