Same issue, Google Assistant registers what I said correctly and then
does nothing except provide some suggested searches. Very frustrating
issue of basic functionality that should work on the device. I have
restarted and still have the issue.
Same issue. Spent way too long repeatedly typing in my very long
password until I googled it and saw other people were having the same
issue. Second account method worked for me. Not great, Google, please
fix this aggravating issue.