Windows 10: Can't sign into Windows 10 Admin Account.

My niece and nephew are visiting. Therefore, I created an account for them to sign into my computer using the "family and friends" feature. However, now whenever I try to log into my account, I can only sign in to their accounts. When you click on the account that you are supposed to sign in to that should show up on the bottom left corner is not showing up. We have tried restarting the computer a million times and have gone on the account settings... but as they are not really "administrator" i don't even get the option for adding another "family or friend"Would appreciate it if anyone could

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How to change admin user account name?

ah so main admin account is 'wizzle' which is what I am currently on
I make another account called 'wizzle2' (with admin rights)
I sign out of 'wizzle' and sign into 'wizzle2'.
And once signed into 'wizzle2', then I do the command prompt step and find the SID for 'wizzle' that is listed and go from there?

 

Admin account and my account on Windows 10 sign-in

When I boot up my Windows 10 desktop, the sign-in screen at the center of the display says, "Administrator" and below that it says that the password is incorrect.

In the bottom left-hand corner there are two listings: "admin" and "myname." I click on "myname" and then at the center of the screen is says my name and below that there's a blank box to enter the password. I enter my Windows password and all is well.

But I don't want to have to do this every time I boot up the computer. I want it to display my name right away and not "Administrator" which I did not create. The myname account is an administrator account.

I've gone into Settings and Accounts and there is only the "myname" account listed. I don't see any "Administrator" or "admin" account.

Some posts have suggested going into Computer Management and clicking on "Groups and Users" or "Users," but there are no such listings under Computer Management in Windows 10.

Any help is appreciated. Thanks.

 

Mail app only working when signed in under Admin account


Upgraded from Windows 7 about two months ago, but this just started a few days ago.
Tried to read my email and found that I could not use the mail app when signed in under my User account. (previously worked fine.)
If I sign in under my Admin account, the mail app works normally.
I've tried deleting and reinstalling the mail/calendar app, and now I don't even have the icons to launch them- not even listed on the start menu, except when using the Admin account.
Is there another way to launch or repair the app?
Any suggested fixes?
Don't want to keep having to sign in as Admin just to read my email.
Thanks!