At stake, I don't know if such rules are in place but occasionally they put withdraw to pending when you deposit and withdraw without playing at all.
Just to clarify, are you talking about terms on first deposits?
Not sure but I think Stake doesn't have terms like that. New to the site, already got deposit but didn't try to withdraw there yet.
I'm not sure about it, but there are some trusted wallets like trust wallet that can be used to store any cryptocurrency. The wallet is simple to use and I don't think it has got restrictions with withdrawal and deposit.
What they are after is a direct transaction with an exchange wallet so that no need to send it first thru other wallets (like Trustwallet) to save fees and converting or withdrawing it to cash will be easy. Less hassle but sometimes, as they say, transactions are tagged as suspicious if come from gambling sites although I didn't experience it yet even there are several times already I made a transaction between exchanges and gambling sites.