If you don't declare the provide at the time of your first deposit, you can do so at any time inside 30 days of registering your account.
Ngaphezu kwalokho, uma ungafuni ibhonasi ngediphozi yakho yokuqala, ungenza njalo nganoma yisiphi isikhathi zingakapheli izinsuku ezingama-30 wenze i-akhawunti yakho.