1. Attached is the screenshot of the implementation of the tag manager just below thecode.
2. Kindly ask the client if this is the GA account they are using in the tag manager dashboard UA-xxxxxxx-1. This is taken from complete ja code. This GA account “UA-xxxxxxx-1” is the one that we have. They might have another account that we did not see.
3. What are the other scripts/tag included in their tag manager aside from Google analytic? Did they use Google re-marketing code with tag manager? Did they really need tag manager?
4. Is there somebody else have the full rights to edit on tag manager?
The website owner complaint that their website have lost traffic and ranking because the Google analytics is missing..
Here is the Google webmaster screenshot for the month of March.
You can see that the site impressions on Google Australia search engine are normal. The blue color is the appearance of the site everyday while the red is the daily click that will lead the user to their site.
As mentioned above, GA code does not have relevance on her keyword ranking. Webmaster does not have relevance too. They are just use to monitor performance.
Just make sure her site is quality and she have nothing to worry from any tools.