A proxy server acts as a gateway between you and the internet.
When you are using a proxy server, the query goes to the address you requested through the proxy server. The data you requested then comes back through that same proxy server, and then the proxy server forwards the data to you.
There are many reasons that we might need to use a proxy for Social Networks. For example:
We might have hundreds of accounts, pages, and groups. Naturally, all requests will go from the same source, and we would like to hide it.
We would like to hide our IP addresses;
It sometimes happens to some people that Social Networks block their servers IP addresses;
As you know, in some countries like China, it is not possible to access Facebook, Instagram, and so on.
Because of company rules;
Luckily, the plugin allows you to add a proxy to the plugin so that you can enjoy using the most popular Social Networks.