Generally, know.com / knows.ch should be usable on all major platforms. If something does not work, try the following options for solutions:
Update your browser to the latest version. Here you can find the instructions for the different browsers:
Deactivate any special settings in your browser (e.g. private mode).
If it does not work with the selected browser, try another browser.
If the problem still occurs, please send us an e-mail to firstname.lastname@example.org.
Provide us with as detailed a description as possible of what kind of problem has occurred. Screenshots are always helpful. Please send us information about the operating system and browser (type and version).