How to respond to the reviews?

This is a little late - you may have gleaned the solution from other threads or figured it out on your own.

1) In a browser, open https://apps.garmin.com/developer/dashboard and log in. This takes you to the old dev dashboard with the list of all your apps.

If you forget/lose this url, you can also append *any* suffix to apps.garmin.com/ and you will be asked to log in. Once you log in, there will be a link to developer dashboard. e.g. If you open https://apps.garmin.com/abc (which is obviously a url that doesn't point to a valid resource on the apps.garmin.com domain), you would be asked to log in, and once you do, there's a couple of links to the dev dashboard on the resulting page.

2) Click on the app you're interested in. Reviews will be at the bottom of the page and you can reply to them

If you're on mobile, here's what I've seen on iOS:

- Tapping on an app link in Safari or Chrome - or pasting a URL into the address bar - opens the app page in the same browser. You may be presented with a banner with a button that opens the page in the Connect IQ store app, but it doesn't happen automatically.

If you tap on an app link in Notes, it opens in the app. I assume this would also be the case for Messages and Mail. Here the solution is to long press the link and select Open in Safari.

Hopefully a similar workaround exists for Android.