Reactivate Mac

Hey apple. I recently forgot my macbook pw tried everything didn't work i went onto the methods i found on Google and changed my password in recovery mode after that it said to deactivate mac and reactivate it after I changed my password

After deactivation and changing the password, now when it is time to activate it I'm still stuck at wrong password it's been 10 hours I've got projects to submit can support chat help me here asap please?