airpods wireless charging case will not charge anymore

hey there, i was wondering my my airpods case isn’t charging while the airpods themselves are. there is nothing wrong with my chargers because i tried all of them with my phone and they all worked, i got rid of anything stuck in the port, reset my airpods but nothing is working. i’m scared that the case will never charge again. i also don’t think i have warranty as i received my airpods in a different country as a gift from a family memeber. please reply if you’ve had the same issue or know how to fix it