I tried out KMS 7.x on a WM phone, and there was a design flaw I wasn't fond of. I wanted the Anti-Spam, Anti-Theft, and Firewall features, but in order for them to work (and for KMS to autostart if the phone was power cycled), Real Time Protection had to be enabled. The problem was that I didn't want Real Time Protection active, just the other stuff - so this left me with a Catch 22.

Does KMS 8.x have the same issue?

Both KMS8 and KMS7 don't require Real Time Protection to be enabled for AS/AT/F to work

No KMS 8 and KMS7 by defult atuosrtart within 10 seconds of install
but sometimes the installation can go corrtped