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I have an old invalid email associated with my profile and neglected to change it prior.
Since, I have reloaded my OS and now cannot login because my new OS is an untrusted device. Worse yet, the email for verification is going to the old, invalid email.
There are several posts on the subject, but it appears that support interaction is required.
Thanks for your post and sorry for the delayed response.
Also, sorry that you are having trouble accessing your old account. Since you do not have access to the old email account to be able to authorize your sign in on the new OS, the only option is to cerate a new TeamViewer account using an email that you currently have access to.
I know this is not the answer you want to hear but without access to the email there is not much else that can be done.
Hope this helps.