Hello everyone, I sent an email to the Philharmonie for details on the time of sale of subscriptions (because of the difference on the French and English site).
Their response is that what is marked on the English page is an error. There will be no 3+ and 6+ subscription but only 2+ and 4+. On sale at 2 p.m. Monday May 17th.
Sorry if there are any mistakes 😅 For those who speak French, here is their answer