I crawled 15 pages of oveso.de (titles, headings, schema, HTML weight, internal links). A few things stand out, and one of them is probably costing you money right now.
The big one: /products/test02 is live and indexable. It carries the exact same title as your real product page — “OVESO© Kompressionssocken” — has no H1, and ships 897 KB of HTML. Google sees two near-identical product pages and has to pick one; it does not always pick the one you want. Delete it or set it to draft in Products → select → Set as draft. If anything ever linked to it, redirect it to /products/oveso-kompressionssocken.
Your homepage title is literally “OVESO” — 5 characters. And it has no H1 at all. That means the only search you can win with it is your own brand name. Nobody searching “Kompressionssocken kaufen” will ever see it. Give it something like “OVESO – Kompressionssocken für müde Beine | Versand aus DE” (aim for 50-60 chars) in Online Store → Preferences, and make sure the theme renders one H1.
Things worth fixing after that:
- Your money page
/products/oveso-kompressionssocken has a 25-character title and no meta description. Google is writing your snippet for you — that snippet is your ad copy in the search results, and right now you are not writing it.
/pages/shipping-information and /pages/versandinformationen have identical titles, and there is no hreflang anywhere on the site. If those are EN/DE versions of the same page, Google picks one and quietly drops the other. Same for /pages/umtausch-und-ruckgabe vs /pages/returns-refunds.
/pages/size-chart-1 has 2 words of content and /pages/collection-bundle has 3. Both are in your sitemap. Either fill them or remove them from the sitemap — empty indexed pages drag on how Google rates the whole domain.
- 8 of 15 pages have no meta description at all.
On the actual conversion question: your product page is 1089 KB of HTML before images and scripts. That is very heavy — on a mid-range phone on mobile data, the page is interactive noticeably late, and paid traffic is the least patient traffic you have. A 30% CTR into a slow page is exactly the shape of “lots of interest, few purchases”. Worth running that URL through PageSpeed Insights on the Mobile tab before you touch anything else on the page.
The rest looked genuinely fine, for what it’s worth: robots.txt and sitemap are clean and correctly linked, HTTPS redirects properly, canonicals are in place everywhere, Product schema is on all your product pages, and every image had an alt attribute — that last one is rarer than it should be.
One disclosure: I work on Topify, a Shopify app, so take this next bit accordingly. The awkward part about the list above is that none of it pays off immediately, and when it does, you cannot tell which change did it — positions move over weeks and Shopify does not connect them to orders. Topify pairs your Search Console data with Shopify sales so you can see what a change actually did, including when it made things worse: https://app.topify.pro. Either way the fixes above are worth doing.