Nov 10, 2026 · @Marketing Team
Here’s a question I ask almost every marketing team I meet: “Do you trust the numbers in your GA4 reports?”
The honest answer is usually a long pause, followed by something like, “Mostly… but the conversions don’t match our CRM, and nobody’s quite sure why.”
That’s not unusual. When Universal Analytics stopped processing data in 2023, thousands of businesses moved to GA4 in a hurry. Many simply ran the setup assistant, added a tag and moved on. The result is a lot of GA4 properties collecting incomplete or misleading data, and marketing decisions being made on top of it.
If that sounds familiar, the good news is most problems are fixable. Here are the mistakes I see most often, and when it’s worth getting help from professional GA4 services.
1. Data retention is still on the default
By default, GA4 keeps detailed event-level data for just two months. That affects explorations, the custom reports many teams rely on for deeper analysis.
For most standard properties, you can raise this to 14 months in the admin settings. It takes thirty seconds and only applies going forward, so the sooner you change it, the better. It’s also the first setting any decent provider of GA4 services checks.
2. Conversions (key events) aren’t set up properly
GA4 tracks events, but it only treats them as key events (what used to be called conversions) if you mark them. Many properties are tracking page views and scrolls, but not the things that actually matter: form submissions, calls, purchases or demo bookings.
Worse, some setups count the same form twice, or count a thank-you page view that people can reach without submitting anything. Either way, the numbers look healthy while being wrong. Fixing this is usually the first job in any GA4 consulting project.
3. Ecommerce tracking is incomplete
For online stores, GA4’s ecommerce reports depend on a specific set of events: view item, add to cart, begin checkout, purchase and so on. If some are missing or send the wrong parameters, revenue reports, product performance and funnel analysis all break.
A common sign: GA4 revenue is noticeably different from what your store platform shows. Some gap is normal because of ad blockers and consent, but a large or growing gap usually means a tracking problem. This is where specialist GA4 services, and GA4 implementation services in particular, earn their fee.
4. Consent mode isn’t configured
If you have visitors from the EU or UK, Google’s Consent Mode v2 matters. Without it, you may lose data from users who decline cookies, and your Google Ads measurement and remarketing can be affected too.
Setting it up correctly with your cookie banner is one of the more technical parts of a GA4 setup, and one of the most commonly misconfigured. It’s a big reason businesses look for GA4 implementation services rather than doing it in-house.
5. Internal and spam traffic isn’t filtered
If your own team visits the site every day, they can make up a surprising share of traffic on smaller sites. GA4 lets you define internal traffic and filter it out, but it isn’t on by default. The same goes for unwanted referrals, like payment gateways showing up as traffic sources. Small filters like these are part of what separates a basic setup from proper GA4 services.
6. Nobody linked GA4 to the rest of your stack
GA4 is much more useful when it’s connected to other tools:
| Connection | What you gain |
|---|---|
| Google Ads | Better conversion data for bidding and audiences |
| Search Console | Organic search queries alongside on-site behaviour |
| BigQuery | Raw event data for custom analysis and longer history |
| CRM | Link leads to actual sales and revenue |
| Looker Studio | Clean dashboards for leadership and clients |
The BigQuery export in particular is underrated. It gives you your raw data without GA4’s sampling and thresholds, and it’s the foundation for serious reporting. Good GA4 services set these connections up from day one.
7. Reports are confusing, so nobody uses them
Even with clean data, GA4’s default interface can feel overwhelming. Many teams log in, get lost and go back to guessing.
The fix is usually a few custom reports or a simple dashboard built around the questions your business actually asks: Where do our leads come from? Which pages convert? What’s our cost per sale by channel? Building these reports is often part of GA4 services too, and it’s usually the part teams value most.
When to bring in a GA4 consultant
Some fixes, like data retention, take minutes. Others need real expertise. It’s worth hiring a GA4 consultant when:
- GA4 numbers don’t match your CRM, store or ad platform, and you can’t explain why
- You’re running Google Ads and bidding on conversion data you don’t fully trust
- You need ecommerce, cross-domain or server-side tracking
- Consent mode and privacy compliance are a concern
- You want dashboards that leadership will actually read
Good Google Analytics 4 consulting services usually start with an audit, then fix tracking through Google Tag Manager, set up key events properly, connect the right integrations and build reporting around your goals. The result is data you can make decisions with.
GA4 consultancy vs doing it yourself
If you have a developer who knows Google Tag Manager well, you can handle the basics in-house. But most teams find a short GA4 consultancy engagement pays for itself quickly. A Google Analytics 4 consultant has usually seen the same problems dozens of times, so they find and fix them faster, and they document everything so your team can maintain it.
Think of GA4 services less as an ongoing cost and more as a one-time fix with light maintenance afterwards.
What to ask a GA4 consulting company
Before signing up for GA4 services, ask:
- Will you audit our current setup before recommending changes?
- Do you work through Google Tag Manager, and will we own the container?
- How will you handle consent mode and privacy requirements?
- Can you connect GA4 to our CRM and BigQuery?
- Will you document what you set up, so our team can maintain it?
The right GA4 consultant will answer all five clearly, and won’t push you into ongoing GA4 services you don’t need.
Final thought
GA4 is a powerful tool, but only when it’s set up with care. Bad data is worse than no data, because it makes you confident about the wrong decisions.
If your reports don’t add up, Nowoka Digital can help. As an AI driven digital marketing agency, the team offers GA4 services that cover audits, tracking fixes and reporting that connects marketing activity to real leads and revenue, so you finally know what’s working.