Dear Diego, hello! Thank you for choosing our product and giving such a detailed evaluation. We are pleased to see that you are generally satisfied with the product, especially in terms of its printing function. We hope this satisfaction can continue. We sincerely apologize for the issues you mentioned during use. We have recorded in detail the situation where Bluetooth cannot be used normally on MacBook, which has been included in our list of key technical challenges to be overcome. We will immediately organize technical backbone to conduct in-depth research and debugging, striving to solve this problem as soon as possible, so that users of different systems can smoothly use Bluetooth printing function. Meanwhile, for the issue of slightly aligning the printing layout to the left, please ensure that the label paper is stuck in the middle position. We have also received your suggestion for USB configuration and will forward it to the product development and planning departments to see