Hi @rob, the problem should be the URL 
The support at Agilebites know about the problem and some of them have already commented on it in the 1P forum.
Unfortunately they haven't got it fixed for months.
I had the problem that the locked 1Password Mini hangs when using the URL.
If it was unlocked, it worked fine with the URL, too.
In this article I will show you my changes:
In my macro (video) I set the pauses to 0.8, but meanwhile I replaced them with pauses of 0.2 and it also works smoothly.