This is how I've finally managed to get my own token and log in successfully with it without using sniffing apps :
1 - You'll need to install the android app, if you don't have an android phone , maybe you can use an emulator or one of the options for running android apps in a computer.
2 - After you login in the android app, you'll have to navigate to the folder where the app stores the files with the token which are in: /Android/data/com.aspiro.tidal/cache/okhttp
Copy all of the files to your computer.
3 - In a Linux terminal, cd to the folder where those files are in your computer and execute this command: grep -r "X-Tidal-Token"
Your token will be revealed
4 - Go to the Tidal settings in Strawberry, check the option 'Use OAuth' and copy the token in the ClientID. Click login and you will be redirected to the browser where you can accept the access to your account and that's it!