I tried to register my mom for a regular zoom meeting, and I gave her email to the host of the zoom. After the meeting was over, I received this message from the host:
When I asked what that actually means there was no answer. Did she 'unsubstantiate' or her account? (the automatic corrector has already underlined 'unsubstantiate' as incorrect) Intrigued, I tried to google it and most entries I got are definitions of the adjective unsubstantiated.
I did find the verb in M-W:
to divest of substantiality : make unsubstantial
but I did not perfectly understand how this verb applies in this context. Is this technical jargon? Why not say disappeared or terminated or something which could explain what happened to her email or account?