Greasy Fork is available in English.
Removes the nagging login popups and banners from mobile and desktop versions of Facebook, Instagram, Reddit, Twitter, Quora, Ask.fm, VK, Pinterest, Tumblr, Twitch and from the mobile versions of Youtube and TikTok.
< Feedback op Login reminder popup remover (developement ceased - not up to date)
Hi Lidya, if you want to install the script, you can follow this guide: Installing user scripts. As you can see, most of the desktop browsers support extensions, but if you want to use it on mobile, you need Kiwi Browser or Firefox (v68 or less).
how to install this script