SEMrush Site Audit not crawling my subdomains

The domain I currently do SEO is
Here’s the thing:
site audit was always set up for
and with that, it crawled not only, but also the blog ( and the forum
On the most recent site audit, it only crawled
Why? How can I make it crawl it all again?
I’ve seen somewhere that I may be able to set up a robots.txt file to my blog’s theme
but how can I do this?
The bot is GoogleBot-Desktop

You already have a robots.txt file provided by Ghost, and this doesn’t prevent bots crawling the site.

User-agent: *
Disallow: /ghost/
Disallow: /p/
Disallow: /email/
Disallow: /r/

I suggest you reach out to the Semrush.