Unable to communicate with instagram

Hi!
I’m having a little issue with this plugin. It was working quit fine before, even though I was sometimes (but rarely) getting the “Unable to communicate with instagram” message. But now I’m always getting it… I unfortunately don’t know since when it’s not working anymore though..
I’ve tried to understand the problem, I’ve also added the line “echo $remote->get_error_message();” after your “if ( is_wp_error( $remote ) )” and I get the error message “Failed writing header”.
I’m using the latest version of your plugin, 1.5.1.
I’ve seen it might be because of my server, but it was working fine before so I don’t really know…
Do you have an idea or a solution to solve my problem?
Your plugin is so great by the way! ??

Thank’s ??

https://www.ads-software.com/plugins/wp-instagram-widget/