LockPW isn't working

[Repter]

Hello!
Just transfered from Chrome and I'm missing only one extension - LockPW.
It's doesn't work in Vivaldi. When I start Vivaldi browser a windows opens and closes instantly.
I think what happens is Vivaldi starts, then starts LockPW and for one of the reasons (depends on what you set in the settings) it shuts down the browser.
Is there a way to make it work? Or the only way is wait for fixes?
P.S. Sorry for my English. It's my second language.

[Repter]

@Gwen-Dragon Just did that.
A little off-topic thought. It would be nice, if there was a reply letter or something. Just so I would know that my report has been taken into account and will it be looked at or it's not a priority for developers right now, and they'll save that for further future.