Question: I'm trying to install the latest beta on my MacBook and always get the message at the end:

> 
> macOS Catalina beta could not be verified
> 
> 
> 

Any suggestions how to solve this?

Answer: 
I just retied and it worked out of the box.
Don't know what the error was, I did not change nothing.
Are you scripting your download:

* [Is there a script I can use to download the Mojave installer without being signed in to the App Store?](https://apple.stackexchange.com/questions/337450/is-there-a-script-i-can-use-to-download-the-mojave-installer-without-being-signe)

That can help isolate things in my experience.