How to open a support ticket in the partner center when you have no program registered

I'm trying to register to the Hardware program in the partner center. But it fails with an error. Thus I want to open a support ticket, but the procedure to open a support ticket forces you to select a "Workspace"... except that the workspace list is empty because I have not registered to any program yet. See screenshot below.

So how can I open a support ticket ?

I tried to call Microsoft's official support but the AI based voice bot, tells me to use https://partner.microsoft.com/support/ as soon as I mention partner center. If I use https://support.serviceshub.microsoft.com/supportforbusiness/create it's the same thing, when you select "Partner center" it tells you to go to the more tailored experience provided by the partner center itself. I once decided to open a support ticket following the instructions from https://learn.microsoft.com/en-us/partner-center/account-settings/unable-to-sign-in and I could open a ticket, but the person who called me back was unable to help and closed my ticket instead of reassigning it to a more suitable team. They were only able to help persons that could not login at all. I can login, but not get help. They suggested me to open a ticked via admin.microsoft.com.

I tried, but I can't file a support ticket, however it gives me two phone numbers for support in France: both very invalid. I found the valid numbers elsewhere but I only get an AI bot that drives me back to partner center website. And when you call a second time, it won't even let you retry by providing different answers and questions, it just repeats their last reply and close the call.

Can we have some knowledgeable human reply somewhere please?