SM-N900P Unlock issue

Welcome to Octoplus/Octopus Box Samsung software version 2.1.5
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To connect SM-N900P phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Build number" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
6. Go to dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Press Home button.
10. Restart phone.
11. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM101
Selected model: SM-N900P
ADB server killed.
Detected phone model: SM-N900P
Firmware compiled date: Thu Nov 5 22:10:50 KST 2015
PDA version: N900PVPUEOK2
CSC version: N900PSPTEOK2
SW version: N900PVPUEOK2
Phone SN: 00000000000
Android version: 5.0 (LRX21V)
Checking Root:
Phone is not Rooted.
Installing service app…
Unlocking phone…
Finalizing…
Phone is successfully unlocked
To finish the operation, please restart the phone via phone’s menu.

Still showing the (Invalid Sim) Error