What’s up with security ?

Hi,

It’s all in the title. I don’t understand what happened. I was perfectly able to connect until now. First, LinkedIn asked to verify if I was a bot by having complete the « click on images » exercise, then it asked me for my number to send a code to verify my identity and then it said it needs to verify my identity and can’t log in.
What should I do ? Is there someone I can contact ?

Thank you.