Scania VCI3 V2.31.0.277.0 got this activation message shown as below, that means you need to install and crack correctly.

Solution offered by obd2tool.com:
Install and crack Scania VCI3 V2.31.0.277.0 by following this video

Works on window7 32bit
Apply to VCI3 for Scania Wifi Wireless Diagnostic Tool

Guide:
Go to Computer/DVD/CD-ROM Drive (E:) SDP3 V2.31

Step 1: Open “AdbeRdr920_en_US.exe” to install Adobe Reader 9.2

Step 2: Open “NDP46-KB3045557-x85-x640-allOS-ENU.exe” to install .NET Framework 4.6.2

Step 3: Open and install “Scania Diagnosis & Programmer 3 2.31.exe”

Step 4: Copy folder “sdp3 patch 2.31” from disk E: to Desktop

Right click on Desktop

Select Personalize

And go to Control Panel->User Accounts and Family Safety->User Accounts

Change user accounts control settings: Never notify

How-to-solve-Scania-VCI3-Activate-Software-Key-message-10

Then open folder “sdp3 patch 2.31” on Desktop

Run “tmode” Windows batch file as administrator

Restart your computer

Step 5: Run “install_driver” windows bactch file in Desktop/sdp3 patch 2.31/drivers

Run as administrator

Run “install” in Desktop/sdp3 patch 2.31

Run as administrator

Windows security: Install this driver software anyway

Driver installed successfully

Step 6: Crack SDP3 2.31 software

Copy all files (SCOMM_SSK.dat, SCOMM_SSK_HL.dll) in Desktop/sdp3 patch 2.31/FIX SDP3 2.31

Open SDP3 Properties

Open file location: Computer/C:/Program files (x86)/Scania/SDP3

Copy and replace files

Step 7: Run SDP3 then exit

Step 8: Change a language via SDP3 Configurator

Run SDP3 Configurator as administrator

Select a language to use

SDP3 languages: German/ English/ Spanish/ Finnish/ French/ Italian/ Japanese/ Korean/ Dutch/ Polish/ Arabic/ Portuguese/ Russian/ Swedish/ Turkish/ Chinese/ Traditional Chinese/ Romanian

Here: Chinese

Step 9: Run SDP3 Chinese

It’s in Chinese

Change the language successfully

So, you can change Scania SDP3 language as you want, with SDP3 Configurator