I'm trying to solve what's wrong with my site but I'm out of ideas. I make new page, write the title as "add-topic" and copy paste the [wpforo item="add-topic"] shortcode as HTML. So there's no even <p> tags.
Then, all I got is a blank page with only the title. I have tried it with forum id too, still the same result. Interestingly, I also cannot edit the page after I publish it. Again a completely blank page. I had to delete and remake the page on every trial.
By the way, I have a contact page and it's working with its own shortcode. No problem for it.
I changed my theme. Deactivate siteorigin page builder. Clear the cache everytime. Translate the add-topic title and tried it like that. In the end, nothing helps.
I see the add-topic code and the page is working here. So what's wrong with my site? Any idea?
There is no such issue on our test website.
It seems there is a plugin conflict. So, please try to deactivate the plugins one by one and check after each deactivation to find the problem maker one.