Love Hik based products.
But software companies are rapidly removing NPAPI support from browsers, citing security risks. In police work, we call this a clue.
Hik has great video quality, but the kludgy access/playback over browsers is one of the worst aspects of their products. They need to redesign web access from the ground up,
Yes, there are workarounds like Palemoon, which I have used myself. But we shouldn't have to go to seek out the browsers from companies who have yet to address what everyone else is calling a security issue.
For those doing this for a living, it becomes an even bigger issue with clients. I'm not a fan of being in a position to tell someone that they can't use their browser of choice because it blocks the Hik interface platform as a security hole.