one of my users went ahead and created her own Adobe ID using her work email address, i also added her to my plan using the same address.
I got her to delete her personal ID but now when she tries to sign in it says her account is deactivated.
How can i get her to use the business ID that i created for her?
Contact Adobe customer care via chat from the admin console. It would have been probably better to get her to change the e-mail on that account to her private mail.
The user have to request to re-activate the Adobe ID in order to access the Business ID.
Did the user get an email letting them know that they've been invited to join your team? Clicking the hyperlink/Get started button on this email should help setup the Business ID and have the user join the team.
Let us know if this helps. The Personal profile didn't actually need to be deleted. But now that the deletion has been requested, it may be causing some issues.