Asking Help to make connection to a digital meeting by Zoom

Hello everybody.

I am Alex from Portugal and I need help.

I am struggling to establish a linked to the host of a meeting of a class in a course I want to attend, but after putting the ID of the recipient who sent me the invitation link to all the classes and the password, I do not know If I can call it an error, but it always appears at the top of the zoom window screen: it does not respond/trying to connect...
Can someone from the Zoom community help me solve this technical problem?
I take the opportunity to warn that I only have no connection on any computer for these undergraduate meetings. All other calls with other people or places were successfully established by Zoom.
It's not a problem of my computer.