Free domain registration must be used within the first 3 months.

In order to qualify for one free domain registration credit for the first full year, you must sign up for a 1-year or 3-year annual plan on Starter Shared, Unlimited Shared, or any annual DreamPress plan (monthly Shared or monthly DreamPress plans do not apply). This free credit is NOT available under any other hosting plan. You must also use the free registration within the first 3 months of your annual Shared/DreamPress plan. If you do not use the free registration within the first 3 months, then it's no longer available to use.

Free domain registration credit is only valid on the following extensions: .BLOG, .CLUB, .COM, .INFO, .NET, .ONLINE, .ORG , .SHOP, .TECH, .XYZ, .STORE, .LINK, .DESIGN, .ME