Couldn’t verify privacy policy URL since the response status was not 200 OK

I’m trying to share my app using the installation link according to the docs, but when I fill the Sharing form I get the following error:

We couldn’t verify privacy policy URL since the response status was not 200 OK. Make sure your site allows requests from user agent node-fetch.

At first I had specified 301 Redirect URL so I changed it to the direct version, and I can check that with curl like this:

curl -X HEAD -I -A "node-fetch" https://leanmote.com/privacy-policy/

And the headers state the 200 OK response code:

HTTP/2 200
date: Tue, 14 Sep 2021 18:13:37 GMT
content-type: text/html; charset=UTF-8
x-powered-by: PHP/7.2.34
link: <https://leanmote.com/wp-json/>; rel="https://api.w.org/"
link: <https://leanmote.com/wp-json/wp/v2/pages/646>; rel="alternate"; type="application/json"
link: <https://leanmote.com/?p=646>; rel=shortlink
x-litespeed-cache: hit
x-turbo-charged-by: LiteSpeed
cf-cache-status: DYNAMIC
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=gNx0mR56TO%2F09VvjBGgmlRIv60BDIijpqlm4TbWXHchfycZHlBTRKhIqoohWZVe4qAZzt9uL8vjNhll7vPfxzNt5YSlz9TfWn3tpTaG6Rx1IuMXFAFgRjguUZmPRVDQ%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 68eb971bdcafd815-EZE
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400, h3-28=":443"; ma=86400, h3-27=":443"; ma=86400

What should I do to set the privacy policy URL?