ACP Credit Not Applied to my Bill

Hello, I am qualified for the ACP program and was approved 4/2/23. A $30 credit was applied to the bill which was paid 4/22/23. 
However on my most recent bill, my ACP credit was not applied. On 5/22/23 I was charged full price.

My eligibility has not expired. Why is my ACP credit no longer showing up on my bill?