I just installed Square for WooCommerce on my Wordpress site. So happy it's free! But I'm running into a problem and have searched all over for help.

It's says it's connected and everything "seems" to be set up correctly. But when I try to do the initial manual sync from Square to WC it just hangs/freezes. I've tried many, many times. This last time I let it run for a couple hours before I finally got an error message saying "Bad gateway. Allow dialogs from [my site] to take you to their tab" and an "OK" button. I hit OK and it just keeps on going, with no movement of the progress bar still.

The only documentation I've seen is on the WC page - https://docs.woocommerce.com/document/woocommerce-square. It talks about disabling caching plugins but I don't see that I have any. I have a brand new install and don't see any listed. Unless there are hidden ones. I'm also wondering about the SSL requirement listed. In my status it says that I 'm not using HTTPS, but I forced it in the Square payments section. I don't quite understand it.

Also, I'm using Siteground, and I went through the cPANEL and found something called "SuperCache?" Can't quite remember the name. I disabled it. Then I found an SSL section that says I can install and activate "Let's Encrypt." Says it's free. Should I do that?

The documentation for this really isn't very good. Hope you can help shed some light on it, as you have it working. Thanks!