Issue with creating properties and headings

Hello Logseq community,
I have recently started using Logseq as my daily driver. I’m learning new things about it everyday. This post is about a problem I have started facing from yesterday.
Whenever I’m creating a property using ::, it doesn’t get converted into property. It remains as a text. I have created a similar properties before but now it just doesn’t do that.

Another problem is making headlines using #'s, it remains as a normal text. I can create headlines using /, but then that particular block remains with that heading.
I thought it might be a version issue, so I updated to a latest version and the problem still persists.
1ii
Here’s a snippet of trying to create property and h2 heading.
Any input will be appreciated.