Hello @spaghettiweb and @adverman and @stephenvz,
The latest version of The Grid plugin which is 2.6.15 just removed the Instagram API section from the Global Settings > Social API section.
In the message that plugin developer gave he explained the reason which @Prasant already shared with you.
So at the moment, the problem is that Instagram is going to stop the support of the API and it will be not available especially to get the media and the access will be only available via Facebook API part.
Now the problem is that version is not implemented yet and that is why the developer decided to disable the feature for the time being.
Rest assured that we will continue to release the new versions as soon as the developer gives the new version. It may have a little bit of delay as we also in our part should test the plugin on each release to make sure that it is compatible with our theme.
Rest assured that both us and the plugin developer are aware of this and highly focused to find a solution.
You guys need to wait for the new releases of the plugin. Nothing else we can offer for the time being.
Thank you for your understanding and patience.