Verification email never received

I tried to watch a webinar that I had been able to sign up with with using Sign in with Apple after first being unable to sign in with my saved password.

When I used the saved password Zoom said a verification email code entry was necessary. I was told a verification email had been sent. It never arrived. Finally after prolonged searching my email folders I found one but it had expired. I tried again several times, requesting resend verification but never received another email. Unfortunately when I tried to sign into the webinar the next day the Sign in with Apple option wasn't available. The verification email option was offered and email supposedly sent. Never got a verification email.

I tried the chat bot to find a solution but it only suggested searching the email again. No joy. It then offered to let me chat with a person but they were: "too busy." They said I needed to submit a claim to tech support. I tried that and the response was: "Unfortunately, we are unable to respond to your open ticket at this time."

So I couldn't watch the webinar and apparently won't be able to sign into zoom in the future.

I also signed into the web front end for my email to see if perhaps somehow my app was blocking the email. Nothing there either.

Does anyone no of a way around the problem?

Some threads talk about 2 factor authentication. I'd be happy to use that but I imagine I need to sign into zoom to set that up.