How do I get the Manage Pop-ups feature to work?

I've been using Safepay for a few years and it's worked ok. I just installed it on a new laptop and now the Manage Pop-ups feature does not work. Here's the scenario: I am in a b and I click a link. I get the "pop-up message blocked" message. In that message, I check the box to always allow pop-ups from the site. I refresh the page and nothing happens. (These steps worked for me in the past.) Because those steps did not work, I went to settings and added the URL/domain that I want to allow pop-ups from. It doesn't save. I can't use Safepay without this feature.