Réinstallation Galaxy Tab A6

Hello, I formatted and then tried to reinstall a Samsung Galaxy Tab A6.
I followed the usual procedure for reinstallation (restoring the Wi-Fi connection, entering the Google account) and then something new happened: after entering the Google account, the tablet refused to reinstall, stating the following:

"The Google Assistant is not available for this account. The Google Assistant requires commands relating to the activity that the device administrator has restricted on this account. Please check with your administrator or change your account and try again."

Given this, thinking I was the administrator, I used another Google account, but nothing worked. Can someone please help me? Thank you in advance.