Google play not update installs number?

My app exceeded 1500 installs 4 days ago in Google play developer console,
but on my app page it still 500-1000 so what’s the wrong?
Thanks in advance

the latest install number would be updated after you publish new version

No, you don’t need to publish a new version for the installs to update. It just takes a few days for it to display your new bracket.