A rate on its own is not enough: 0% can be an export or an exemption, and the return tells them apart. Here are the named taxes in each country, and what JooDax does and does not do there.
That JooDax knows the names of its taxes, so it can label what you recorded, and that it states plainly what it does not do there. It fills in no return, submits nothing to any authority, and claims approval from none. The rates are published for orientation — check them with the authority before relying on them, because they change.
VAT calculator