I just forwarded the mail.

Ok, first of all, I would recommend everyone to NEVER USE FREEWALLET.ORG, why? Here we go

January 8. I asked Freewallet if I was going to have any trouble because of my ammount [is not that much (≈0.8 BTC), but I wanted to be sure there will be no problems], they said "No", I knew that the exchange was going to be processed by Changelly, so I asked the same to Changelly support, and they told me nothing would be a problem because there's no limit for cryptocurrencies transactions.
"Ok, cool", I thought, then I sent ≈0.8 BTC to Freewallet from my Blockchain.com wallet.

I exchanged my BTC into Monero (XMR), then the first problem appeared (not from Freewallet, not yet ...), it was Changelly requesting KYC verification ...
I thought, "Ok, I was not expecting this but here we go ...", and I have no things to say about the Changelly security and support team, they were really fast. It took me like 20 minutes to verify my identify by sending ID and selfie holding my ID and the image they sent to me.

While I was waiting to get verified by Changelly, I asked Freewallet support if there would be any issue after getting verified by Changelly, and they said no.

I received my XMR from Changelly exchange, and I decided to withdraw my money from Freewallet, then ... "Our security system has detected suspicious activity on your account.".

I was chatting with Freewallet's support so I asked immediatly what was going on, and they told me it was ridiculous to be asking to verify my identify if Changelly already did (yes, support and security team are differents deparments in Freewallet and look like they are not even connected), then told me to send the same documents I showed to Changelly KYC, so I took a selfie, my ID card pic, and sent by mail (can you believe it? that's not even secure way to send such personal information ), then waited ... and waited ...

After more than 24 hours (January 9) I received another mail, saying they need more documents ...

Another selfie with a picture they sent to me, a document with my residential address in English (even when I'm from a non-english speaking country), and a screenshot of the wallet from where I deposited BTC into my Freewallet account.

I asked to refund my money back into my Blockchain.com wallet, and they said it was not possible, so I sent the documents they required to get my money ...

I'm still waiting for an answer, it looks like they never are satisfied, I read in anothers post that it is because they try to prevent illegal activity, but there's no reason to think is illegal activity if I provide all they requested to me, it is, as their own support team said, ridiculous. I'm really concerned about how personal information is processed and stored, and about my money, because they make this look like a theft.

I don't know what kind of proofs should I add here, I'll read your suggestions.

I will update.

Thank you.

UPDATE (Jan 13): Freewallet.org verified my account and gave me my money.