a problem with SMTP

Hello. I have a problem with SMTP. I use the contact at https://github.com/IceTimux/SMTP-reCaptcha-Contact-Form
, but I have connected everything, as it should be in the file config / config.php and in index.php, but it still does not work, I tried in all ways, is SMTP also blocked on free hosting?

We don’t provide any SMTP service, but you should be able to use a third party SMTP without any problems.