Usage over HTTPS

It works fine over HTTP, but I’m trying to use WP-United over SSL. The problem I have is that all of the style-fixer <link> tags are pointed to HTTP instead of HTTPS. I’ve drilled down in the code and see the URL coming from a function called generate_board_url in phpBB’s functions.php. If I put a die($url) before the return, I see “ https://” ;, however if I just use var_dump($url) , all the urls are suddenly “ http://” ;. My only guess is that there’s some output buffering and content manipulation going on somewhere. I’ve hacked it up and gotten it working with the following code, but it seems like a bad idea in the long run: return str_replace('http:', '', str_replace('https:', '', $url)); Does anyone know how I can fix this properly? Thanks! https://wordpress.org/plugins/wp-united/