Hello Sharon Neer, thank you for sharing your query.
Alexa-enabled devices not being able to connect to Wi-Fi network is unfortunately a common issue.
We suggest you to first check that the internet connection is stable and if it is, then please restart your modem, router and your Echo device.
Many a time, a restart of the concerned devices solves the problem.
Hope this solves your query.
In case the problem persists, please feel free to reach out to us, we would be happy to assist and solve the problem for you.
Happy smart living :)