I guess it has nothing to do with geo-dns.
It is not an application and hardware connection.
I could not log in from the application to the server.
You can not log in even if you enter the correct login password.
Reset password
On login screen click on “Problems signing in?” label and than “Reset >Password” button. You’ll get instruction on your email.
I entered a new password according to the mail that arrived.
However, due to a problem on the server side, a password parse error occurred.
(Windows and iOS)
Password reset succeeded only from Android application.
I was deleted because I was not logged in about 1 year?
https://community.blynk.cc/t/does-auth-token-or-account-login-have-expiry/18977
It looked like the account was deleted because I did not log in for a long time.