Just follow the instructions here:
If you hit any problems then post back here with details - e.g. what you're trying to do, exactly what steps you take, what goes wrong, any error messages etc.
If you need to contact 48 support about this then see the link in my signature below or email them at support@48months.zendesk.com
By the way, it's not a great idea to post your phone number in a public forum like this.
