Some answers from your questions

I cannot see my console.log, why ?

When you write a console.log within a tag to check if a tag is correctly triggered of to check a value, for example like this :
when a new container version is generated, it re-writes the console.log as tC.log
To be able to read these tC.log you need to add this cookie within you browser :
// Set this cookie to read tC.log
tC.setCookie("tCdebugLib", 1, 30);