Huh? That is your first post here...?!
What is your problem?
Contact 48 support and they should be able to allow you to buy a Don and activate it "early" although you will lose whatever Guido allowances remain if you do this.
See the link in my signature below.
Chat support is probably the quickest way to sort this out.
Hope this helps.
Chat is still here for me:
https://www.48months.ie/help#contact-us
Hope this helps.