Envelope Windows 7.6.1.71047 do not detect Time Period expired licences

I have a very simple app which prints a message and waits for 1 sec in a loop, it was compiled with Visual Studio 2015 for x64. I run it on Windows 8.1 Enterprise x64.

I have protected this app with Envelope 7.6.1.71047 (see below for a list of options enabled).

I use Sentinel HL Max keys in Driverless configuration, version 4.53.

I use Time Period licenses for 1 day.

The protected application starts well and activates the license, I can see that in ACC. Then 1 day passes the ACC reports the license has expired, but the application continues to run. The ACC shows the expired license and 1 active session (the very same session then the application started).

The application can run for infinite time in this state.

If I remove the key the application detects its absence and asks to insert the key. After I insert the key the application reports that license has expired and invites me to provide the valid licence.

I would quite appreciate your kind comment about the issue I have.

Regards,

Oleg

P.S. The Envelope options I use:

Protection key search mode: Local only

Feature ID: 2000

User debugger detection: on

Periodic background checks: 300 sec

Allow grace periods after failed licence check: 1

Run-time wait: 120 sec

Run-time wait message: on

LOCKING_TYPE: HL

SUSPEND_THREADS: True

BACKGROUND_CHECK_AUTO_RELOGIN: True

The run-time: