Not working with Really Simple SSL

This plugin has been working great for me during the last few months. But today I switched my site over to https with the Really Simple SSL plugin. I went into the Multi Domain plugin and updated my domains (bookmarkedshow.com and author.bookstacked.com) from http to https. https://bookmarkedshow.com should redirect to https://bookstacked.com/bookmarked and https://author.bookstacked.com should redirect to https://bookstacked.com/about-the-author.

Instead, the domains are going straight to https://bookstacked.com. The plugin’s not working. However, when I’m logged in, it’ll redirect to https://bookmarkedshow.com/bookmarked/ and load the page.

Any idea what the fix might be? Thanks!