Android alpha testing "Item not found"

If the app is "Published", but when you click in "View in play store" the site (example: https://play.google.com/store/apps/details?id=com.companyname.appname) show the error:

"We're sorry, the requested URL was not found on this server",

try this:

• In "Google Play Console" (https://play.google.com/apps/publish), select your app
• goto menu: Release management / App releases
• In Aplha, click in the button "Manage Alpha"
• Click in "Manage testers" and copy the link "Opt-in URL" (example: https://play.google.com/apps/testing/com.companyname.appname)
• Send this link to your alpha users, you and the users need to click in "Became a tester" before access the app in PlayStore.

After this, open the link of app in play store again (View in play store) logged with a user from the testers list.

If the url still don't open, try close your browser, or clear the browser cache and try again. The browser store a cache of redirects.

If you are using Chrome, then it caches redirects. To fix it, clear browsing data. More details on this

In my case, the issue was that I wasn't logged to Google with the proper account in Chrome.

I cleared all browsing data, but un-logging from Gmail/Google and re-logging with the proper @gmail.com account would probably have done the trick.