If your alarm panel is mounted on the wall and you are receiving a "Tamper Alarm: Host Panel" notification, it may be due to the Gen 2 alarm panel not sitting flush on the mounting bracket. If there was a slight shift in the wall or another issue causing the plate to slightly change position, the Tamper Alarm: Host Panel may be triggered.
Here is the location of the tamper switch on the Gen 2 alarm panel:
The area that is circled in Red is the alarm panel Anti Tamper Switch.

The area circled in Red is the Tamper Switch leg on the mounting plate:
A test was performed when the tamper switch leg is removed from the mounting plate.
Link where you can watch or download the video: Gen 2 Tamper leg removal
If you have not resolved the issue with the mounting plate installed on your wall triggering the tamper switch, the above removal of the tamper switch is a possible solution if you wish to take that route.
As shown below, it is very important that the mounting screws be installed exactly as shown. If the screws are not flush or slightly sunken, your panel will trigger a Tamper Alarm: Host Panel.

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