You do it yourself, from the app, on the spot. There is no small print.
Where it is: Profile → Delete my account, in the last block.

In the app, Profile → Close my account. It asks for confirmation twice (the second time by typing CERRAR) because it cannot be undone. Once confirmed, everything in the list below is deleted immediately.
Your Telegram subscription is also cancelled if you had one (monthly plan or extra accounts): you are not charged again. What was already paid is not refunded except in the cases set out in the terms.
Payments, for 90 days for accounting; after that, what was left of your account disappears too and the payments are left without a name. And a minimal record of the closure (your Telegram identifier, sign-up and closing dates, last plan, how many payments you made and whether you used the free trial), kept for accounting and so the trial is not repeated. It holds no messages, channels or configuration.
Deleting your account does not close your trades. Anything open stays at your broker with its stop loss and its take profit, and nobody will manage it.
Decide beforehand what you are doing with them.
And if you want to keep your history, ask support before closing: you are entitled to a copy of your data and we will give it to you.
Nothing needs deleting:
Deleting is for when you want nothing left.
Besides deletion, you can ask for a copy of your data, correct it, restrict it, object to a processing or take it with you. All through support, from the Telegram account you use for the service. It is in the privacy policy.
Write to us in the bot and a person reads it. Tell us what you expected and what happened.
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