I believe Didi is still banned from the Chinese App Store. There was some movement in July (
https://www.scmp.com/tech/article/31...urn-after-ride) but it still doesn't look like it's there.
Here's a screenshot from my iPhone with the Chinese App Store. I think Dida is a different company than Didi? The second result is the global DiDi which works outside China. There's no entry for the Chinese Didi.