As soon as you activate a channel in EffectConnect, certain processes will be triggered to synchronize your data between your webshop, EffectConnect, and the marketplaces. Within a short time of period after activating the channel, you should see changes in the marketplace, EffectConnect, and your webshop (like the orders being synchronized).
Please keep in mind that EffectConnect only imports orders that are open in the marketplace. Orders that are already sent out or completed are not imported by EffectConnect. It is also not possible to import completed orders afterward.
To know which processes run at certain times, you can read this article with the synchronization intervals. Please keep in mind that for some channels there are different situations, to know if there are different situations for a marketplace, go to this link and read the article about the specific marketplace.