Dear Lawny, Thank you for sharing your experience with the ASUS TUF Gaming VG279Q5R Monitor. While we are pleased to hear that you found the picture quality and response time to be excellent, we sincerely apologize for the difficulty you have experienced with adjusting the audio volume and the challenges faced when attempting to use the app. We regret the inconvenience this has caused. We hope you were able to return the device through your reseller for a functional replacement. Your feedback is greatly appreciated and will be passed along to our product team for further review. We stand behind our products and continuously strive to improve our products and processes to achieve customer service excellence. If you require any further assistance, please email us at customerloyalty@asus.com and include the case number "N2609025147-0001" as a reference. We will do our best to resolve your case quickly. Your feedback is very important to us, and it enables us to improve our support channels. Thank you for choosing ASUS. Best Regards, Chantae ASUS Customer Loyalty US Support