Storage no longer there

About a year ago I had the iPhone XS, I didn’t have a lot of storage on it so I started paying $1/month for 50 extra GB. I got the iPhone 13 Pro in September and got the one with 256 GB. I recently just realized I was still paying for the extra 50GB from my old iPhone so I cancelled the subscription. Today I go on my phone and it tells me I’m out of storage even though I paid for the 256 GB when buying the iPhone 13 Pro and i’m back to 5GB, why is it doing this?