Zoom Live Training Link doesn´t work

Hi everybody !

I feel shocked and sad. I am a person, who needs a little bit longer to feel secure in things. So I decided to book some Zoom Live Trainings. All went well. 

But since some days, I don`t get reminders in my e-mail account and the link in the confirmation mail fails/ doesn`t work, though it was for an upcoming sheduld webinar, hosted and sended by Zoom.

 It pushes me back to the side where to book the training, though I did before. Also copying the link in my browser doesn´t work. I got shown: Link is unknown.  

( It´s about the Zoom Live Training that`s called: "How to teach online with Zoom" )

Time Zone is right and checked, browser worked in the past ( some days before ), I booked it and got a confirmation, that I am allowed to take part in it. Zoom client is updated. 

Anybody an idea, what might be the reason and what to do to solve the problem ? 

Every usefull answer is appreciated !

Thanks in advance and greetings to all Zoom lovers.

The Inquisitive