Follow these steps to potentially solve the problem:
If the issue persists, reinstall the Steam Client.
Critical cookies are required for the functionality of the website. These cookies assign a unique random ID to your browser to ensure the best shopping experience across multiple page views.
Marketing cookies are used to individually target advertisements on the website across multiple page views and browser sessions.
Tracking cookies help the website operator collect and evaluate information about user behaviour on their website.
These cookies are used to collect and process information about the use of the website by users in order to subsequently personalise advertising and/or content in other contexts.
Service cookies are used to provide the user with additional services (e.g. live chats) on the website. Information obtained through these service cookies may also be processed for site analysis.