I am using the latest version of 1Password on my iMac as well as my iPhone and iPad, but when I attempt to sync, my iMac is no longer visible on the mobile devices. I used to have this issue intermittently, but it is now a constant issue. Any ideas?
I assume your Mac and iOS devices are on the same wifi network and that you're using 1P4 or 1P5 on all of them. If that is so try this:
You also may wish to give your router a restart. Try that, and please let us know.
Also, when you have the issue, check to make sure you iOS devices are still connected to the WiFi network.