@01 "it won't open" isn't very descriptive. What is it actually doing? Screenshots are very helpful to convey that info.
What is your nginx config? Where did you get your https certificates? Have you been following a guide, and if so, which one?
@hoathenguyen85 Hey! I've tried virtual host rewrite rules such as this and they don't work. Can you confirm if this works for you?
@sanatisharif You can also use nodebb-plugin-camo which will proxy user uploads through https, removing mixed-content warnings.