[SOLVED] Super User becomes inactive after Save

Joomla 3.7.2
PHP 7.0.11
CB 2.1.2+build.2017.06.23.22.16.38.2c6bbd64f
CB AntiSpam 3.0.1
CB Privacy 5.0.0+build.2017.06.20.00.05.14.22261cce9
CB Profile Update Logger 3.0.0+build.2017.06.16.00.26.14.5c0b0ab94

I got this error after promoting a user from Administrator to Super User.
When I save the user, he immediately becomes Inactive.

When trying to login in Frontend, this message is shown:
Error
Your login is blocked.

But in Backend, I can see the user is NOT blocked, the account is inactive.
In BE user list view, I click the icon to enable the user and the icon changes.
When I enter the profile, he is still disabled. Enable, Save, changes to Yes, refresh the page and again disabled.

I have tried to disable the plugins, no difference.
AntiSpam Logs looks ok.
AntiSpam Blocks list is empty.

I have a clone of the site with CB 2.1.2 (2 nightly builds older) where I cannot replicate this error.
As it is a live site, I have not tested to change other accounts.

I am out of ideas where to search errors.
Any suggestions are highly appreciated.

Thanks!

The block column in _users has to be set to 1 for that error to display. Disable non-core CB plugins 1 by 1 to until issue goes away to see if a plugin is causing it. If not then I recommend looking into installed Joomla System and User plugins as both can act on Joomla user stores.

Thanks!

Yes, you were right that the problem was in the Joomla user manager.
I have tried, but have not been able to recreate the issue.
I guess this was just an accident.

Problem solved.

Thanks.