GMAIL SMTP not working

Hi, I have installed gibbon using softaculous in my webpage hosted with you. Its free hosting. I want to setup smtp in Gibbon. I used google smtp, and also mailgun(as you said in one forrum reply that you support mailgun), but none are working.

HI, Just to update on this.
I thought may be Gibbon has so problem. So I just used your website builder and build a trail page. I used a contact form on this page(following your suggestion in our forrum question). I set up this contact form to google smtp and its not working as well. I get error ‘failed to send sms’

Problem solved. Thanks