Bought on August 21 and received on August 30.
Controller works very well as intended. Customization was a bit tricky as I had to contact customer support for the template.
I also had to look up the different modes the controller had for various platforms and games. I think controllers like these would benefit a lot from a manual showing off all the modes that are possible on the controller, as well as the controls for each mode. I think at the very least, there should be something on the product page itself telling you to go to the controller's firmware GitHub for more information:
https://github.com/JulienBernard3383279/pico-rectangle
Besides that, the controller functions great and seems well made. If the controller lasts long, I would recommend this controller to anyone looking for a rectangle controller for platform fighters.