Users are unable to purchase tokens and end up leaving the checkout frustrated, generating a high level of complaints and directly influencing the number of sales.
“Usability refers to the quality of a user's experience when interacting with products or systems, including websites, software, devices or applications. Usability is composed of three pillars: effectiveness, which is related to the assertiveness of the system; efficiency, which refers to performance and performance; satisfaction that is the user's feeling when using your interface.” — Usability Gov.
Not being mindful of design principles can negatively impact product metrics.
Before launching the product, it is important to carry out usability tests to see how users behave with the product and improve the visual interface, in this way we can predict errors and reduce expenses by developing a product with critical errors.