Thank you for your response. I had previously tried this and it did no good for me. However for anyone reading the in the future I have solved my issue. I followed a different suggestion as well.
Go to general
users
Guest
Then general
Users
Remove guest
And then voila the none option magically reappeared.
Hope that helps someone else.
Well I tried deleting guest, but when I went back to owner, guest was still there. And I cannot find a clear credential option anywhere!
I also couldn't delete my credintials so instead I changed the security type from lock screen in personaliztion not from security and the none option wasn't greyed out