Hi @normsash
This is simply how View Admin As works.
I use the user session to keep track of the original user.
I’m not familiar with this firewall plugin. I use Wordfence myself without issues.
As this is a core functionality of this plugin I am not sure if these plugins will ever be compatible due to the nature of how they are built.
You might try User Switching. This plugin actually changes your cookies so it might work with this firewall plugin.
Alternatively you could switch to Wordfence or Sucuri for firewall functionality which will work with this plugin.
If you absolutely need both plugins to work together then please contact me on GitHub so we can discuss this further. This is out of scope for support.
Cheers, Jory