Here Is a screenshot..
I'm using reckon one and firefox 52.0.2 its working fine for me so don't think its a reckon problem. Here are some help tips: (Reckon did do maintenance work a day or two ago)
Firefox caches websites, which means it saves some files on your machine so that it doesn't have to re-download everything when you visit sites. If a website has updated their code, Firefox may still be using some of the old code along with some of the new, which can make a web page display incorrectly. To fix this, you need to clear the cookies and cache:
- Click the menu button , choose History and select Clear Recent History....
- In the Time Range to clear: drop-down, select Everything.
- Click the arrow next to Details to display the list of items that can be cleared.
- Select both Cookies and Cache.
- Click Clear Now.
Maybe also check to see if you have current Java and adobe flash player. But I'd clear cache first.
Hope you find a solution.