Check the Waterfall report to see the issue.
The large Purple bars is the time the browser waits for your server to respond. Some of those requests are Blocking, ( the large brown bars) – so the next requests are not even made until those earlier requests are completed.
You need to speak with your host as to why there is so a long waiting time.
Some of your Thrive content eg. your sign up pop-up is requesting Lato font.
Your logo is being requested after those CSS / JS files are being requested – they are render blocking – this will be related to how your cache plugin is re-ordering the CSS/JS requests.