If you are playing on a dedicated local server with high ping, button presses on keypads might not register correctly. Try hosting a local server instead. To help tailor this guide, let me know:
: Open L4D2, click on "Add-ons" to ensure it is checked, and start a local or campaign lobby. Why Do Custom L4D2 Campaigns Have Passwords? l4d2 cambalache 2 password
are you in (e.g., hotel, subway station, specific street)? What does the clue say exactly on the paper? Cambalache 2 - Workshop - Steam Community If you are playing on a dedicated local
If you're interested in more custom content, I can help you: Find the best custom campaigns with high replayability. Locate the download links for the latest custom campaigns. Provide walkthroughs for other popular custom maps. Share public link Why Do Custom L4D2 Campaigns Have Passwords