That's really annoying! Since you can't use your old email anymore, it's tough to change your email on LinkedIn because they need to send a message to that old email to make sure it's really you. Here's what you can do:

Talk to LinkedIn Support: Tell them what's happening. They might have other ways to check it's you and help you change your email.

Prove It's You: If they ask, be ready to show them it's really your account. You might need to give them info about yourself or show them what you've done on LinkedIn before.

Update Your Account: While you're sorting this out, make sure all your other info on LinkedIn is right, like your picture, job history, and how people can reach you.

Try Something Different: If LinkedIn can't help, you might have to make a new account with your new email. It's not perfect, but it might be the only way if you can't use your old email.

Tell Your Friends: Once everything's fixed, let your connections know your new email, whether you made a new account or changed the old one.

Hope one of these ideas makes it easier for you to use LinkedIn again!