Can’t purchase more pipeline minutes

I received the alert “The padosoft-clienti namespace has exceeded its pipeline minutes quota. Buy additional pipeline minutes, or no new jobs or pipelines in its projects will run.”
but when I click to this button, I redirected to this url: with 404 Page not found error.

I also try to go to Group → settings → usage Quotas → pipeline and click to “Buy additional minutes” button, but 404 Page not found error appear.

How can I buy more minutes?
It’s urgent, becouse I can’t deploy my app!