Identity verification (KYC) raises your withdrawal limits. You can deposit, trade and withdraw within the basic limits without it. See What are the withdrawal limits?

You will need:

a government-issued ID: passport, driver's license or national ID card;
a device with a camera for a selfie;
a few minutes in a well-lit place.

Click your name at the top right and choose Verification (or open Account → Verification). Verification is done in the main account and covers its sub-accounts: a sub-account has no Verification.
Click Start verification.
Follow the steps in the verification window: photograph the document and take a selfie.
When you finish, the status changes to Pending review. We notify you on the site and by email when the review is complete.

What the statuses mean and what to do if verification is declined: What does my verification status mean?

During verification we also check the country of your document, your citizenship and your country of residence. If one of them is a restricted jurisdiction from the Terms of Use, your account is limited to withdrawals: Why is my account limited to withdrawals?

Documents are accepted only through verification on the site. Never send documents by email or in the support form, even if someone asks you to on behalf of Strade.

Stay safe: Strade support never asks for your password, 2FA codes or seed phrase.

How do I verify my identity (KYC)?