Hi there and welcome
To confirm, you forgot the screen lock code correct?
So you cannot unlock it?
ok, you need to get the original provider to unlock this. Who was the original provider?
ok, but the code is not valid if it is being rejected
Call 00 34 607 12 30 00
Have them reset the attempts and get them to give you the correct code please.
You cannot reset it yourself
Let me know how you go please