When I created my account I got $18 credit, I just used $0.02 now it says credits expired

I created account just a month back, initially when I join I got $18 credits and when i test my API i got no balance message. When i checked my billing I saw message stating my credits got expired on 1 March 2023. But my account was credited in May not before that.

Are there any options to restore the existing credits?