Crypto

Hi, iv had a crypto broker for around 4 months now, I invested £9000 and my account has reached over £30,000 now, iv asked for a £4000 withdrawal and then received an a mail saying I have to pay nearly £6,000 tax before all funds are released to me, my broker said this isn’t unusual and to pay it ASAP so I can then send the majority of it back to carry on trading. This really doesn’t feel rite. Has anyone heard of this procedure before? Many thanks Carl

there are more than 1000 types of crypto coins on the market. with many you see that they sometimes increase more than 100% in value, my question is if the following is it possible if you start with 100 euros and you would trade every day in a coin and you make every time for 40% profit on all your bet then it is still possible that you have more than 2 million euros in 30 days??. here is the calculation 100 * 1.40 ^ 30 = 2,4 million please explain if it is possible or not