"Set a due date" and "To-dos" aren't working on Dropbox Paper web

Welcome to the forum, meelis! 

What if you try an incognito window instead? Also, besides the two browsers you mentioned, do you have another one you can test this on? 

If none of the above helps, I’d like more info on what’s happening exactly (and perhaps a screenshot as well to have a visual). 

Let me know how it goes.

Thnx advice, incognito window worked well, do you have idea how fix the problem with my ordinaty browser?

What I did to fix the error: Deleted .tmp files. I logged out of the account and restarted the computer. Nothing has helped

I also wanted to make a screen video, but capture doesn't open 😞 

Hi meelis, if the browser works in incognito mode, then something on the normal browser is affecting the site. Could you try disabling all running extensions and script blockers, and clear the cache to see if this helps?