HELP Newbie, how do I tell if I'm being scammed?

Hello,, I am new to everything related to Crypto Currency & need help determining if I'm being scammed or not. I've been sending Bitcoin for mining since last Fall & slowly incurring profits on the below site. I have now spent any & all money this way & need to send funds to my bank account ASAP for bills which are piling-up. The site is.

https://360miningdeft.com/

Here are my questions; 1. Is requesting a fee for a KYC verification normal? There is nothing posted on the site about needing to pay this fee. 2. Is restricting accounts & then stating I need to pay another fee normal? They do not on the site have information on daily minimum withdrawals & then locking or restricting the account & until another fee is paid to unrestrict the account.

Side note: I don't know how I will pay for this new fee.

1. I've been told I cannot use the funds/BTC sitting in the account to pay any fees. The funds for fees have to be added to the account separately. The do not have anything posted to their site with this information, they just send it by email after I try to do it. Why would they have such a rule?

Please help me figure this out. My bills are piling-up & I'm very stressed out by this entire situation.

I thank you in advance for your assistance.