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I've checked your website, and it seems that you've just started building, that's great, welcome to Yola!
When you say "links", do you mean your navigation menu links? I can see a couple of them, and they each take me to your pages where there isn't much content yet. So your menu links do display fine for me and work.
Or did you add links to the body area of your pages, and these links are gone? If you save your changes in the Sitebuilder and republish your website, your links should be there. If the issue happens again, do I have your permission to test this on your website and republish it?