Work Transformation Summit won't accept my email address

Hi, Didi here ~ I'm trying to register for the Work Transformation Summit Zoom emailed me to my work email address but it won't let me use this same actual work e-address. Very frustrating & yes, I've tried other e-addresses & no, they don't work either. Otherwise, what's the point of trying to sign up if it doesn't let you use your preferred work email?!?  Zoom can piss off too many of its users with these aggravating Catch-22 situations...

If anyone has any workarounds or suggestions I'm all ears.  Thanks!