Clear your browser cache and cookies. This can typically be done in the browser settings under "Privacy and security" or a similar section.
Ensure that you have the most recent version of your browser installed. If not, update your browser and try accessing the LEVEL app again. Restart your browser.
Our firewall might prevent users to access the website if it detects unusual behaviour caused by browser extensions. Check if any browser extensions are interfering with the LEVEL app. Temporarily disable extensions, especially those related to ad-blocking, privacy, or security, and try accessing the app again. If it works, enable the extensions one by one to identify the culprit.