If you haven’t seen https://pl-diagnose.on.fleek.co/, I would highly recommend checking it out. I tried debugging your CID on pl-diagnose and wasn’t able to get to a success on " 4. Is my node serving the content?" even though the rest were successful. Maybe you will have better luck?
I was able to retrieve your content from my local kubo node though, with
> npx -y kubo dag get QmXnnyufdzAWL5CqZ2RnSNgPbvCc1ALT73s6epPrRnZ1Xy
{"Data":{"/":{"bytes":"CAISFEknbSB0cnlpbmcgb3V0IElQRlMKGBQ"}},"Links":[]}%
> npx -y kubo cat QmXnnyufdzAWL5CqZ2RnSNgPbvCc1ALT73s6epPrRnZ1Xy
I'm trying out IPFS