Your website template is crashed and wpDiscuz has no chance to work on your website.
For some reason you have a lot of CSS/JS code after the closing tags. This is a big problem, you should fix this at first:
I think all these problems come from WPFront Notification Bar plugin.
Then make sure the footer.php file of your WordPress theme has function. This is the main function which allows all plugins to load their own JS and CSS files:
If you still can't find the problem maker, I recommend deactivate all plugins, delete all caches and check again. Then activate them one by one and find the problem maker plugin.