Hello EdgardoF,
I have this same issue and raised it as a case with Meraki. It looks like they know about it, this was their reply on 04/08/2020 (August):
I have investigated further and unfortunately, this is a known issue that is currently being investigated by our engineering team. As soon as any updates are available I will let you know.
In this meantime, the engineering team informed possible work arounds (both need to happen post-enrollment):
* Assign owners to devices in bulk with a .csv uploaded in the SM > Owners page.
* Enable User Authentication, so owners are automatically assigned during enrollment.
Apologies for the inconvenience caused by the issue, but rest assured is it being looked into.
Sorry I couldn't be more help.