Unable to send email from Zoho Mail 2 for Android

Unable to send email from Zoho Mail 2 for Android

Hello

Using Android 6

I am not able to send email from first account with error "Server error".
I can send email for first account with default email client(activesync).


I can send email from second account from Zoho Mail client and default mail client (activesync).


Regards
Miha