To put Monday.com Board on your Digital Signs.
Go to app.optisigns.com.
Click Files/Assets, then click Apps
Then click the Monday.com app
Paste your Monday.com shareable link (see how to share your Monday.com board view publicly here) in.
If you don't want to share your Monday.com Board publicly, on your device you will need to enter in username and password to log in and use your Monday.com Board URL (https://demo---optisigns.monday.com/boards/xxxxxxxxxx) instead of your Monday.com shareable link.
You only need to do it once and set remember credential.
If you are using FireStick, you can connect up a Bluetooth keyboard, mouse to enter the User name and password. Here is a related article.