Shopify TSE (KassenSichV)

The reviews are overwhelmingly negative, with most merchants reporting that the app does not work reliably or at all for its intended legal TSE/KassenSichV purpose. A recurring complaint is that reports, exports, or TSE data cannot be sent properly to the tax office or accounting, that QR-code or receipt information is missing, and that the POS/TSE connection frequently fails or becomes inactive. Several reviewers say the app has caused serious operational and compliance concerns, including the risk of legal non-compliance, fines, and costly workarounds with accountants or external developers. Support is also criticized heavily for being unhelpful, slow, or limited to generic responses, and some users feel they are paying for a service that is not being delivered. There are a few positive notes, but they are rare. One reviewer says installation is straightforward, the app works well, and the price is fair compared with alternatives. Another mentions that the app can function sometimes, but even these mixed reviews still point to instability and repeated errors. Overall, the dominant impression is that the app is unreliable for a legally required function, with the main positives being ease of installation and occasional successful operation rather than consistent performance.