I am having difficulty changing the login email. I have followed the instruction in the help section but I get an error that the email address is taken. The email i want to change to is one that i receive email. I tried to login to zoom on another new device and it asked for account verification. I can't verify with the current zoom email login because it is incorrect. Should i delete the account to restart?

Desde hace tres meses zoom me está duplicando los cobros y solamente tengo una cuenta. Cada mes me hace dos veces el cargo a mi tarjeta bancaria  y sumado a esto en mi historial de facturación solo me aparece un cargo. Este mes cancele mi cuenta  de zoom pensando que ya no ocurriría y nuevamente me realizó el cargo mensual. Zoom me está robando. ¿Quién me resuelve?

I have a ZOOM PRO account, using Version: 5.16.10 (26186) and wanted to change some settings, but was asked to contact the account admin to ask for permission. On further investigation with the useless zoom bot and after rounds and rounds of asking questions that were not answered, I found out that my account is a "null account type", but the bot couldn't give me any further information on this. (It was only referring me to deactivated accounts, which has nothing to do with my situation as I am using and paying for my zoom regularly.)

I have no idea, what a "null account" is and why I have only a limited use of my own account as I am the only person using this! The only thing that I could imagine is that there is a mix up in zoom's admin as I have had another account previously with another email. They might have added this account to the original one, but there is no way how I could find that out as the bot has no clue and the there is no way to get to a human.
(What a frustrating experience! And I am quite a troubleshooter! I wonder what do people do that have not tech gene in them when they encounter a zoom issue!?)
Any ideas? Grateful for your help