Data protection officials in the Netherlands have fined TikTok €750,000 for failing to offer a statement on privacy in Dutch.
"TikTok failed to provide an adequate explanation of how the app collects, processes, and uses personal data," a statement read.
The Dutch Data Protection Authority said that the country's privacy law is based on the principle that "people must always be given a clear idea of what is being done with their personal data".
It added that it made other recent changes to safeguard the privacy of children, including only allowing direct messaging for users aged 16 and over.
"[TikTok] is one of the most popular apps at the moment. It's also great fun to make videos together and see what others are making," said the Dutch authority's vice-president Monique Verdier.