I have never wanted to open such a topic, but I am forced.
I am getting this error message for 4 days, and get in touch from contacts page 4 days before, they did not respond yet.
Is there somebody who gets this message for a long time and able to subscribe a signal somehow.
No, when you get this message, your only solution is to contact the Service Desk and wait for their reply.
We can't help you here.
Do as you were told, contact the Service Desk at the bottom of this website: Contacts and requests.
You can't, you need to contact Service Desk and solve the limitation first.