Deleted plugin caused several errors in our DB

Do you use exactly this “User Role Editor” not other one with similar name?

Look at user-role-editor/uninstall.php – script executed before URE plugin deletion.
URE deletes its own records only from the wp_options database table. It does not touch the record with option_name field value ‘wp_user_roles’, where WordPress stores user roles. Thus URE can not affect site user roles data during its deletion.

I completely follow your logic here, however, when we deleted your plugin, and this was the only change we made, it somehow contributed to change in our user roles. We use the Total theme. Do you know of any conflicts with this theme? Our hosting confirmed this bug with us while inspecting our DB.

It is the 1st report about possible conflict with the Total theme.
Can you share its copy with for testing?

I am ready to investigate the issue if you can setup a stage copy of your site for this purpose.

I do appreciate the help Vladimir, but due to business requirements, we’ve since restored our entire site to an earlier version prior to installing your plugin. So, unfortunately, we currently don’t have a viable copy to make for you to test. I just wanted to make you aware that we experienced this on our end related to the Total theme.

Thank you for this information.