Hey aze80,
If I understand correctly, you are entering your Apple ID and password and it is not correct. It sounds like it may be Activation Lock. I would recommend you use this article to help troubleshoot the issue.
"If you forget your Apple ID or password
Your Apple ID is the account that you use to sign in to all Apple services. Usually, your Apple ID is your email address. If you forget your Apple ID, we can help you find it.
If you forget your password, you can reset it from your device or your Apple ID account page.
If you can't find your Apple ID or reset your password, you'll lose access to your account and might be unable to use or reactivate your device. To help prevent this, visit your Apple ID account page periodically to review and update your account information."
Activation Lock for iPhone, iPad, and iPod touch
Please don't hesitate to let us know if the steps resolved your issue or if you need additional assistance.
Thank you for using Apple Support Communities. Have a good one.