Alliance market ltd, possible scammers

Hello. In December, 2022, I was contacted by a person via a social media (Instagram), who pretends to be a professional Forex trader using the binary options. She said that I have to open an account on the following platform: Alliancemarketltd.com, which I did after her push. She also said, all I have to do is to buy an investment plan which costs $300 and it would be usable during 5 days. I was skeptic at the beginning but after a few days, I said why not and I bought this investment plan. She asked me to give me my e-mail to her so she can put in her software in order to star the trading. After a few days, I have checked my Alliance market account and yes, indeed, the profit appeared on my account. The final profit was exactly $10635. When it comes for the withdrawal, I was asking to pay a fee for $500 called ''withdrawal fee''. This fee is also listed on their website. I paid this amount of money, and I have received the confirmation via e-mail that my withdrawal request of $10635 have approved and funds have been sent to my selected account. After that, I have received another e-mail which said that my withdrawal has been successfully approved and it will reflect in my bank account in 24 hours. After a few hours after this e-mail which confirms that the money will reflect in my bank account, I have received another e-mail where it says that a one time processing fee is needed to process my payment immediately. They were requesting me to pay another $500 and it was said that after this payment, I will receive the amount of $10635 in less than 10 minutes. Well, I did not pay it due to my ''red flag'' because it could be possible to lose another $500 for these scammers. I would appreciate if you can check this broker called ''Alliancemarketltd.com''. Are they scammers indeed or not? I have also contacted their support on Whatsapp and this guys asked to buy this final amount of $500 into a Bitcoin address provided by him. He said that this address is an ''international charges''. If they are scammers indeed, I would like to make sure that they have been exposed. Alliance market ltd or you can access by using: Alliancemarketltd.com.