Hi Rhonda,
Thanks for reaching out! I’m happy to help you with this issue.
You say it still appears when you disabled all Events Calendar plugins? If this is the case, then it is not related to any of our plugins. Normally our plugins wouldn’t do that.
It seems like you went through our conflict testing guide:
Testing Conflicts With Themes and Other Plugins
Could you also test with a default theme like twentysixteen, please?
Also I recommend you reading through this thread, where others are having the same issue.
https://wordpress.org/support/topic/plugin-wp-super-cache-admin-bar-displays-for-non-logged-in-users
Let me know if that helps.
Thanks and cheers,
Andras