Hello. First of all, I apologise if my post is in the wrong topic, I was looking for the best place for it.
I have used the wallet and brokerage platform SpectroCoin for many years. Sometimes there were minor problems, sometimes it was normal. I even used to have a plastic card that I could use to cash out bitcoins at the ATM into Euros. My amounts there are small. Just as another alternative to other wallets or platforms.
About a week ago, I made a transfer from yobit.net (where I've had a few dollars for ages) to my Spectrocoin wallet, about 0.0002 BTC. Nothing happened for a few days, no money came into my Spectrocoin wallet, even though yobit.net shows that the transaction is now "Completed" and the money is out. Then I get a strange email from Spectrocoin, from the "Operations Team":
"You have received ***** BTC in your SpectroCoin wallet. Transaction hash: *****.
In order to comply with rules and regulations, we would like to ask for:
A short description regarding the reason for this payment (see questions below).
1. What is the purpose of collecting the assets?
2. Who is the sender of the assets?
As well as any documents supporting your explanation (e.g. invoices, agreements, statements from sending crypto platform)"
I checked - it was the exact amount and hash number of the transaction from Yobit.
After about a few hours, I could no longer access their website on my computer: "Your IP Address ***** is blocked." I guess this is not a coincidence.
I replied: if you see the exact amount and hash and the money hasn't come yet, is it you who is holding the transfer? I find your question strange - what is the purpose of collecting assets? What is the purpose of the money? Should I now specify where and how I will spend it? And I said that the money was transferred from Yobit.net. I also said that my IP is now blocked and I cannot access the site at all, is it you who have blocked me, or is it an automatic blocking for some reason unknown to me, perhaps because someone has discredited my IP?
A day later they wrote back to me that due to the blocking their "representative will get back as soon as possible." It's been a week now and no further response. By the way, I logged in to Spectrocoin on my phone and successfully transferred the remaining money to another wallet.
I'm not trying to accuse them of anything, I'm just asking questions because I haven't come across anything like this. Maybe you someone has more experience and similar practices. I will just add that I have never broken any of their rules and I have a certified account with all the documents and biometric passport data.
Can a wallet manager hold a transaction?
Can they ask where the money came from and what you will spend it on?
Maybe they suspect some illegal activity and find the transaction suspicious?
Maybe they are hedging against a possible hacking?
Maybe they suspect money laundering? But it's only 18 USD

Something else I don't know or understand?
Have you ever had similar questions from your wallet manager?
If you could comment on something, if you have encountered a similar situation, I would be very grateful.
Also, I will clarify and update the information as soon as there is something new. If everything is okay, I will write to avoid casting a shadow on the company and damaging their reputation. If there is something wrong, I will also write to let others know and warn them to beware.
Thank you for your feedback.