RHEL7 Workstation + devtoolset : cannot install

Hi

I have registered to a RHEL7 workstation standard subscription and to a Developer Suite subscription.
I can seen that both are attached and active, yet I cannot get the repo list to install the devtools.
I've detached and re-attached several times, I've also cleaned and re-registered everything, but no luck.

Anyone has been confronted to that problem? Have you found a solution?

Thanks
Fred