European Union regulators are accusing TikTok of breaching digital safety rules because of because it’s not being transparent enough about ads shown to users of the video sharing app.

The European Commission said TikTok might be breaking EU rules on advertisement information provided to users.

TikTok Inc. isn’t fulfilling a European Union requirement meant to protect consumers from scam advertisements, putting the company at risk of a fine, the bloc’s executive arm said in a preliminary finding.