Moving a SIM to another lebara account

Good Morning all
I am currently paying for my son's Lebara SIM . We would like the sim to be transferred to him so that he can pay for it .
I assume the process would be similar to >
* He creates his own account
* Purchases a plan (does he have to order a sim card?)
* We apply for a PUK code ?
Is there a simpler way ?

Thanks !
~ Martin ~

Hey MartinY I'll check with the team what the best process would be for this. I'll update you shortly.

MartinY If your mobile number is already linked to an online account and you’d like to use it with a different account, you’ll first need to unlink the number from the existing account. Steps below. Let me know if you have any problems with the process.

Step 1: Unlink your mobile number
Go to Account → Manage Your SIM
Select the option to unlink/remove your mobile number
Step 2: Register a new account and link your number
Start your registration here:

https://www.lebara.co.uk/en/mylebara...?register=true

Enter and link your mobile number during registration
Complete the account setup
Step 3: Set up your plan renewal
Add a payment method
Turn Auto-renew ON to ensure your SIMO plan renews without interruption

Hi
I have 2 mobile numbers on my account I am trying to delink 1 to a separate account but I'm finding it difficult...keep receiving the message Failed to delink missing.
I did ring customer services but the advisor I got was very impatient, and presumed I was computer literate. I found I was unable to follow her instructions and at the end of the call had linked the number back to my account...I was advised to follow the instructions she gave me and the call ended.
I'm in my late 60's and hope you can help.