My iCloud account is disabled because of security purposes. Earlier, I changed my apple ID.

I already changed a couple times my password and they've asked me to reinitialize each time.

It also keeps asking about my old apple ID...

Also, when I try to sign off of iCloud, can't figure out the iCould password, I've tried them all..

I was thinking of rebooting it, I just got this macbook air yesterday

Thank you for helping!