Works on first generation Apple Watch?

Hi, I've tried few things in the past few days, including clearing and pairing the watch a few times. Now the 1Password app is still being installed, showing a greyed out icon on the watch face and a spinning circle on iPhone's Watch app for the past 12 hours or so.

Other apps that existed on the watch before can't seem to be installed either. They all show spinning circles when I push the Install button on iPhone. The watch may just be too old to handle the latest apps. I'll give it a few days keeping the phone and watch close to each other to see if any of the apps would install and let you know. Thanks!