Rik Lewis

This appears to be a conflict with the SG Optimizer plugin from SiteGround.

Yes, reinstalling does appear to have fixed the problem, thanks!

The plugin version is 7.11.21 and WordPress is 5.1.1.

I’ll try reinstalling and let you know what happens.

Yeah, same thing here. Looks like Instagram might have changed the URL or something, each image returns a 403 status with the body “URL signature expired”. Same thing on the plugin’s demo page… https://instagram.jrwebstudio.com/

Will this plugin be updated?

I’m having exactly the same problem as this on TSO Host, who claim that all the ports are unblocked. I’ve also checked with Office 365 that their IP hasn’t been blacklisted.

One things I’ve done is modified the plugin to add “gethostbyname” function calls around the entered value, which then means the IP address is translated and I can see it in the logs, this has been useful in getting me slightly different messaging, but still nothing that works.

In your case, GoDaddy block SMTP pors (25 and 587) and you have to send email out through their relay…

https://stackoverflow.com/questions/21841834/phpmailer-godaddy-server-smtp-connection-refused