Since yesterday I can use my wordpress app to send email

Since yesterday I can use my wordpress app to send email

Every time I try to send anything I get the same issue: 

CLIENT -> SERVER: EHLO ggunique.com
CLIENT -> SERVER: STARTTLS
CLIENT -> SERVER: EHLO ggunique.com
CLIENT -> SERVER: AUTH LOGIN
CLIENT -> SERVER: [credentials hidden]CLIENT -> SERVER: [credentials hidden]SMTP ERROR: Password command failed: 535 Authentication Failed
SMTP Error: Could not authenticate.CLIENT -> SERVER: QUIT
SMTP Error: Could not authenticate.

Tried to send test email using swaks (on linux) and was successfull. 

 ~> AUTH LOGIN
<~  334 VXNlcm5hbWU6
 ~> aW5mb0BnZ3VuaXF1ZS5jb20=
<~  334 UGFzc3dvcmQ6
 ~> N011UHh6Q21IRTRO
<~  235 Authentication Successful


I have also tried using same password that i use for login on mail.zoho.com also to generate app specific password, still no change and same issue occured.