Membership 2 can't find posts on cat archive

I have a mapped domain in my multisite that won't display category archives ("Sorry, no content matched your criteria.") when Membership 2 is activated. I also have another mapped domain that does not experience this issue. The one that doesn't work is using https the one that does work is using http - aside from that both sites are using same theme framework and running pretty much the same plugins.

I've tried the standard troubleshooting methods - turn off plugins (how I discovered it was Membership 2 causing the issue) and changing to a default theme (2015).

I have granted access.