5 stars to rate requires a minimum of explanation ...

5 stars to rate requires a minimum of explanation especially when it is bad.
I will therefore cut my note into 5 themes (software, hardware, sales, support and training) themselves noted out of 5 and the final note will be the summary. Namely, I never put the extreme notes 0 and 5.
Other details: This is my very first business and through my professional life I have worked on "back-office" systems directly connected to POS systems.
Software (4/5): It is quite complete. A number of functions / reports proposed necessary and sufficient. We always want more but it's "must". It is user-friendly, ergonomic and fairly easy to use when you are comfortable with it.
Material (2.5 / 5): Beautiful design. A little expensive. Brittle. Push button "power" already broken (yet we are not bullies). Problems with the ticket printer which regularly does not want to print (very penalizing when a customer wants his ticket and there is a queue). But is it hardware or software (Windows, driver, ...)
Commercial (0.5): So here we are close to the dotted zero. I acknowledge that the sales department was able to sell me the solution. However after that it is a complete flat encephalogram. I have never known a box with such little (no) empathy for the customer. I write this comment because it's been 15 days since I request support and commercial service without any call from them since. More than astonishing.
Support (1,5): Do not go through with the resolutions with the client. Display amount on TPE: "buy the right cable", not resolved. Discrepancies in accounting export: "Why are you sending me your file?", Still not resolved. No ticket printing: "Shut down your PC and Printer every evening", not resolved despite the application of the instruction and at least 3 calls. And when the contract expires then: "you are no longer under contract, I cannot do anything for you" even if an incident has lasted for several weeks ...
Documentation / Training (2/5): Too succinct (1h30) for such a complete system, especially when it is your first experience. We had to tamper all alone ... at the risk of making mistakes. You have to cry to get more training and I don't think I got it. There is documentation, of course, but we regularly see that the menus, the functionalities, the parameters do not correspond to your tools. The documentation is therefore not updated.