Sharing the join link

An approved app has a short link such as /j/k3m9qx. Opening joining creates a second short link such as /r/q7n4pa. Copy the link and the one-line invitation into a message.

The round link works only while people are still joining. It expires when you start the round or when you stop it. The next round gets a new code.

Ask testers to open the link and continue with the Google account on their test device.