The maximum number of requests to Instagram per hour has been exceeded. What to do?
If you see an error "The maximum number of requests to Instagram per hour has been exceeded" when you try to load the gallery it means that Instagram has blocked your server due to high amount of requests per hour (currently 200 requests per hour). This can happen when you have many galleries on your website and also if someone else on your server is sending requests to Instagram too (Instagram bot, for example).
Instagram can block your server not for an hour, but permanently. But there is a solution of this problem. Starting from version 1.98.3 you can use Proxy in the InGallery. There are many companies that provide proxies for Instagram, for example: https://proxy-store.com/en/
You just purchase a proxy and set it's settings to the InGallery and that's it.