Dear Blynkers, especially those who use Blynk on iOS. We have an issue.
Our email account was suspended by Google, so you are no longer able to send Auth Token with one click.
Solution:
Tap on the Auth Token and it will be copied to clipboard. Then use any email app to send it to yourself.
Sorry for the inconvenience. This issue is already fixed and we will publish it to the AppStore in 2 days. Please tell fellow Blynkers!