Hi there new persons here

I have three disabled children
Claiming for two. I have a 16 year old unable to walk he has been claiming since 4.and I have a 7 year old on renewal. Three weeks ago I put in a claim for my third child and today I received a text have never received a text message from dwp only when I applied for the first time for them both.
It read
We've decided your child qualifies for Disability Living Allowance. You don't need to contact us about this. We'll send you a letter with all you need to know. If you don't get this within 2 weeks please contact us.
Bearing in mind I have sent off two forms one new claim and a renewal.
Which one would it be for?