If the BB Code options are greyed out, all you have to do is click the 3 dot icon on the far right to bring up more options, then click on the [ ] bracket icon to switch to toggle BB Code.
But these aren't "new threads" from your screenshot. It's in the same order as "new posts".
But this is not a "new post" list. This is a view from a forum page where there are sticky threads associated with the forum page. For example, on 420Mag the sticky threads are "420 Magazine's Mission...
New Blog Entries & New Blog Entry Comments can be found via What's New
If on mobile:
Tap on the hamburger menu (top-left)
Tap on 420 Blogs
OR
Tap on the hamburger menu (top-left)
Tap arrow on What's New
Tap either New Blog Entries OR New Blog Entry Comments
Create a Blog:
Go to the Blog Index Page
Click Create Blog
Open the hamburger menu on mobile to find 420 Blogs.
Select "Is community blog" if you want other members to post blog entries in your blog. Do not select it if you want to be the only person who publishes content in your blog...
Yea, I have an idea of what you're doing:
You're copy/pasting it here:
If the image was uploaded to the gallery, you just need to follow my instructions:
See the red bolded part in the quote above and the screenshot from the message.
There are alternative ways to embed a gallery image too...
Since this is an image you uploaded to your gallery, you can press the Camera icon in the editor and select the image to insert or you can go directly to the gallery photo page and grab the link to put between the IMG BB Code like you did: