Timo Club Offers No Way to Delete My Account or Data

I actively used an account I created on the Timo Club app for about 1 day. However, since I don't trust the app, I want my account and all personal data tied to it to be completely deleted.
I couldn't find any phone number or clear contact channel within the app for account deletion or support. Because of this, I'm unable to close my account myself, and I feel uneasy about this from a security standpoint.
I'm requesting that Timo Club permanently delete my registered account and all of my personal data, and that this deletion be clearly confirmed to me.