We need to advise you that when you copy and paste rich text directly from MS Word (or another word processor) onto your site, this brings along a whole lot of unwanted formatting that is not web-friendly and can easily break your page. It can also cause your site to show up inconsistently in different browsers. The problem might not always show up immediately, but sometimes it happens after you save and navigate to a different page or log out and log in again.
To avoid display and loading issues, the best alternative is first to paste your text into Notepad (in the accessories folder of your computer) and then paste it as plain text onto your Yola page. You can then use the Yola text editor to format your text as desired.
Please note that this would be the case with any browser-based text editor you might use, not just Yola. It is a universal website building problem.
It's also always a good idea to keep a copy of your text in a .txt file from Notepad so that you have a backup copy kept on your PC.