The current content page hasn’t been created by TagDiv Composer! after transfer

Hi,
I wanted to create a demo of my website (for customization reasons) so I copied all my files to the subdomain (meaning same server) demo.domain.com.

Also, I created a new database and imported the main database. No issues with that.

The demo.domain.com looks and works just fine but, when I try to edit the home page with the TagDiv Composer, I get the the green error message and everything in the preview screen is white.
Also, I tried to create a test page to see if the composer will work and same thing happened.

Can you, please, help us with this issue?

Thank you in advance.

Hi Simion,
I checked the parameters and i think that, since the composer works fine for domain.com, everything described in the system status page should be OK.
Let me remind you that I made a copy of the main site to a subdomain on the same server, meaning that the system status is the same.

I deactivated, deleted and re-installed the composer plugin.
Unfortunately, exact same thing.

Is it possible to give you the credentials of an admin account to have a look?
Thank you in advance.

Hi Simion,
I created a new demo and everything works good.
No need to waste any more time on this.

Thank you for everything.