Testing changes in playground doesn't work

When a PR to DefinitelyTyped is opened, the mergebot posts a comment You can test the changes of this PR in the Playground. When the link to playground is opened and user agrees to install the playground-dt-review plugin, the plugin makes a request to https://dtmergebot.azurewebsites.net/api/Playground-Info?number=${prNum}&code=<something>. This request fails, because dtmergebot.azurewebsites.net does not exist. There is a PR (https://github.com/orta/playground-dt-review/pull/6) to change the URL to dtmergebot2, but it also doesn't exist.

According to the configuration, up-to-date domain is dtmergebot3.azurewebsites.net, but if I modify the plugin code and change the domain, server responds with 403 Ip Forbidden.

Could you either fix the API access (and somehow get @orta to update the plugin)? The alternative is removing entirely this broken functionality and the message from mergebot:

https://github.com/microsoft/DefinitelyTyped-tools/blob/f986e045c1c30f012b6dcdf172d7512d46a908d3/packages/mergebot/src/compute-pr-actions.ts#L603-L605

Start with packages/mergebot/src/compute-pr-actions.ts and .github/workflows/deploy.yml, then inspect the linked playground-dt-review plugin and its Playground-Info request. Determine whether the deployed API can be accessed or whether the broken Playground message should be removed; done means the selected behavior works without the current failing request.