I think I managed to download the client using Firefox.
Chromium was giving the following JavaScript errors:
package:1 Refused to execute script from 'https://software.opensuse.org/themes/bento/js/l10n/global-navigation-data-pt_PT.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.
application-0d93f6674420aa1001d63520e0e118cd.js:11 Uncaught ReferenceError: global_navigation_data is not defined
at HTMLDocument.<anonymous> (application-0d93f6674420aa1001d63520e0e118cd.js:11)
at c (application-0d93f6674420aa1001d63520e0e118cd.js:2)
at Object.fireWith [as resolveWith] (application-0d93f6674420aa1001d63520e0e118cd.js:2)
at Function.ready (application-0d93f6674420aa1001d63520e0e118cd.js:2)
at HTMLDocument.r (application-0d93f6674420aa1001d63520e0e118cd.js:1)